Fix mising check

New invoice generation setting: User request but paid only
Ticket preview: Fix incorrect type of sample price
2025-01-14 09:22:48 +01:00 · 2025-01-13 13:22:03 +01:00 · 2024-12-19 13:37:38 +01:00 · 2024-12-18 15:24:28 +01:00 · 2024-12-18 13:57:29 +01:00 · 2024-12-18 13:49:18 +01:00
312 changed files with 151377 additions and 100357 deletions
@@ -60,6 +60,14 @@ http {
            deny all;
            return 404;
        }
+        location /static/staticfiles.json {
+            deny all;
+            return 404;
+        }
+        location /static/CACHE/manifest.json {
+            deny all;
+            return 404;
+        }
        location /static/ {
            alias /pretix/src/pretix/static.dist/;
            access_log off;
@@ -288,6 +288,7 @@ Example::
    [django]
    secret=j1kjps5a5&4ilpn912s7a1!e2h!duz^i3&idu@_907s$wrz@x-
    debug=off
+    passwords_argon2=on

 ``secret``
    The secret to be used by Django for signing and verification purposes. If this
@@ -303,6 +304,10 @@ Example::

    .. WARNING:: Never set this to ``True`` in production!

+``passwords_argon``
+    Use the ``argon2`` algorithm for password hashing. Disable on systems with a small number of CPU cores (currently
+    less than 8).
+
 ``profile``
    Enable code profiling for a random subset of requests. Disabled by default, see
    :ref:`perf-monitoring` for details.
@@ -231,11 +231,10 @@ The following snippet is an example on how to configure a nginx proxy for pretix
        }
    }
    server {
-        listen 443 default_server;
-        listen [::]:443 ipv6only=on default_server;
+        listen 443 ssl default_server;
+        listen [::]:443 ipv6only=on ssl default_server;
        server_name pretix.mydomain.com;

-        ssl on;
        ssl_certificate /path/to/cert.chain.pem;
        ssl_certificate_key /path/to/key.pem;

@@ -216,11 +216,10 @@ The following snippet is an example on how to configure a nginx proxy for pretix
        }
    }
    server {
-        listen 443 default_server;
-        listen [::]:443 ipv6only=on default_server;
+        listen 443 ssl default_server;
+        listen [::]:443 ipv6only=on ssl default_server;
        server_name pretix.mydomain.com;

-        ssl on;
        ssl_certificate /path/to/cert.chain.pem;
        ssl_certificate_key /path/to/key.pem;

@@ -249,6 +248,14 @@ The following snippet is an example on how to configure a nginx proxy for pretix
            return 404;
        }

+        location /static/staticfiles.json {
+            deny all;
+            return 404;
+        }
+        location /static/CACHE/manifest.json {
+            deny all;
+            return 404;
+        }
        location /static/ {
            alias /var/pretix/venv/lib/python3.11/site-packages/pretix/static.dist/;
            access_log off;
@@ -97,6 +97,7 @@ lines                                 list of objects            The actual invo
 ├ gross_value                         money (string)             Price including taxes
 ├ tax_value                           money (string)             Tax amount included
 ├ tax_name                            string                     Name of used tax rate (e.g. "VAT")
+├ tax_code                            string                     Codified reason for tax rate (or ``null``), see :ref:`rest-taxcodes`.
 └ tax_rate                            decimal (string)           Used tax rate
 foreign_currency_display              string                     If the invoice should also show the total and tax
                                                                 amount in a different currency, this contains the
@@ -126,6 +127,10 @@ internal_reference                    string                     Customer's refe

   The ``event`` attribute has been added. The organizer-level endpoint has been added.

+.. versionchanged:: 2024.8
+
+   The ``tax_code`` attribute has been added.
+

 List of all invoices
 --------------------
@@ -203,6 +208,7 @@ List of all invoices
                "gross_value": "23.00",
                "tax_value": "0.00",
                "tax_name": "VAT",
+                "tax_code": "S/standard",
                "tax_rate": "0.00"
              }
            ],
@@ -342,6 +348,7 @@ Fetching individual invoices
            "gross_value": "23.00",
            "tax_value": "0.00",
            "tax_name": "VAT",
+            "tax_code": "S/standard",
            "tax_rate": "0.00"
          }
        ],
@@ -352,12 +359,12 @@ Fetching individual invoices

   :param organizer: The ``slug`` field of the organizer to fetch
   :param event: The ``slug`` field of the event to fetch
-   :param invoice_no: The ``invoice_no`` field of the invoice to fetch
+   :param number: The ``number`` field of the invoice to fetch
   :statuscode 200: no error
   :statuscode 401: Authentication failure
   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.

-.. http:get:: /api/v1/organizers/(organizer)/events/(event)/invoices/(invoice_no)/download/
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/invoices/(number)/download/

   Download an invoice in PDF format.

@@ -384,7 +391,7 @@ Fetching individual invoices

   :param organizer: The ``slug`` field of the organizer to fetch
   :param event: The ``slug`` field of the event to fetch
-   :param invoice_no: The ``invoice_no`` field of the invoice to fetch
+   :param number: The ``number`` field of the invoice to fetch
   :statuscode 200: no error
   :statuscode 401: Authentication failure
   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
@@ -397,7 +404,7 @@ Modifying invoices

 Invoices cannot be edited directly, but the following actions can be triggered:

-.. http:post:: /api/v1/organizers/(organizer)/events/(event)/invoices/(invoice_no)/reissue/
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/invoices/(number)/reissue/

   Cancels the invoice and creates a new one.

@@ -419,13 +426,13 @@ Invoices cannot be edited directly, but the following actions can be triggered:

   :param organizer: The ``slug`` field of the organizer to fetch
   :param event: The ``slug`` field of the event to fetch
-   :param invoice_no: The ``invoice_no`` field of the invoice to reissue
+   :param number: The ``number`` field of the invoice to reissue
   :statuscode 200: no error
   :statuscode 400: The invoice has already been canceled
   :statuscode 401: Authentication failure
   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to change this resource.

-.. http:post:: /api/v1/organizers/(organizer)/events/(event)/invoices/(invoice_no)/regenerate/
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/invoices/(number)/regenerate/

   Re-generates the invoice from order data.

@@ -447,7 +454,7 @@ Invoices cannot be edited directly, but the following actions can be triggered:

   :param organizer: The ``slug`` field of the organizer to fetch
   :param event: The ``slug`` field of the event to fetch
-   :param invoice_no: The ``invoice_no`` field of the invoice to regenerate
+   :param number: The ``number`` field of the invoice to regenerate
   :statuscode 200: no error
   :statuscode 400: The invoice has already been canceled
   :statuscode 401: Authentication failure
@@ -84,6 +84,7 @@ fees                                  list of objects            List of fees in
 ├ tax_rate                            decimal (string)           VAT rate applied for this fee
 ├ tax_value                           money (string)             VAT included in this fee
 ├ tax_rule                            integer                    The ID of the used tax rule (or ``null``)
+├ tax_code                            string                     Codified reason for tax rate (or ``null``), see :ref:`rest-taxcodes`.
 └ canceled                            boolean                    Whether or not this fee has been canceled.
 downloads                             list of objects            List of ticket download options for order-wise ticket
                                                                 downloading. This might be a multi-page PDF or a ZIP
@@ -159,6 +160,10 @@ cancellation_date                     datetime                   Time of order c

   The ``cancellation_date`` attribute has been added and can also be used as an ordering key.

+.. versionchanged:: 2025.1
+
+   The ``tax_code`` attribute has been added.
+
 .. _order-position-resource:

 Order position resource
@@ -195,6 +200,7 @@ voucher_budget_use                    money (string)             Amount of money
                                                                 are changed *after* the order was created. Can be ``null``.
 tax_rate                              decimal (string)           VAT rate applied for this position
 tax_value                             money (string)             VAT included in this position
+tax_code                              string                     Codified reason for tax rate (or ``null``), see :ref:`rest-taxcodes`.
 tax_rule                              integer                    The ID of the used tax rule (or ``null``)
 secret                                string                     Secret code printed on the tickets for validation
 addon_to                              integer                    Internal ID of the position this position is an add-on for (or ``null``)
@@ -255,6 +261,10 @@ pdf_data                              object                     Data object req

   The attribute ``print_logs`` has been added.

+.. versionchanged:: 2025.1
+
+   The ``tax_code`` attribute has been added.
+
 .. _order-payment-resource:

 Order payment resource
@@ -406,6 +416,7 @@ List of all orders
                "tax_rate": "0.00",
                "tax_value": "0.00",
                "tax_rule": null,
+                "tax_code": null,
                "secret": "z3fsn8jyufm5kpk768q69gkbyr5f4h6w",
                "addon_to": null,
                "subevent": null,
@@ -645,6 +656,7 @@ Fetching individual orders
            "tax_rate": "0.00",
            "tax_rule": null,
            "tax_value": "0.00",
+            "tax_code": null,
            "secret": "z3fsn8jyufm5kpk768q69gkbyr5f4h6w",
            "addon_to": null,
            "subevent": null,
@@ -1613,6 +1625,7 @@ List of all order positions
            "tax_rate": "0.00",
            "tax_rule": null,
            "tax_value": "0.00",
+            "tax_code": null,
            "secret": "z3fsn8jyufm5kpk768q69gkbyr5f4h6w",
            "discount": null,
            "pseudonymization_id": "MQLJvANO3B",
@@ -1739,6 +1752,7 @@ Fetching individual positions
        "tax_rate": "0.00",
        "tax_rule": null,
        "tax_value": "0.00",
+        "tax_code": null,
        "secret": "z3fsn8jyufm5kpk768q69gkbyr5f4h6w",
        "addon_to": null,
        "subevent": null,
@@ -249,7 +249,7 @@ Endpoints
            "orderposition": null,
            "cartposition": null,
            "voucher": null
-        },
+        }

   :param organizer: The ``slug`` field of the organizer to modify
   :param event: The ``slug`` field of the event to modify
@@ -260,3 +260,114 @@ Endpoints
   :statuscode 401: Authentication failure
   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to change this resource.
   :statuscode 404: Seat does not exist; or the endpoint without subevent id was used for event with subevents, or vice versa.
+
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/seats/bulk_block/
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/subevents/(id)/seats/bulk_block/
+
+   Set the ``blocked`` attribute to ``true`` for a large number of seats at once.
+   You can pass either a list of ``id`` values or a list of ``seat_guid`` values.
+   You can pass up to 10,000 seats in one request.
+
+   The endpoint will return an error if you pass a seat ID that does not exist.
+   However, it will not return an error if one of the passed seats is already blocked or sold.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+        PATCH /api/v1/organizers/bigevents/events/sampleconf/seats/bulk_block/ HTTP/1.1
+        Host: pretix.eu
+        Accept: application/json, text/javascript
+        Content-Type: application/json
+
+        {
+            "ids": [12, 45, 56]
+        }
+
+   or
+
+   .. sourcecode:: http
+
+        PATCH /api/v1/organizers/bigevents/events/sampleconf/seats/bulk_block/ HTTP/1.1
+        Host: pretix.eu
+        Accept: application/json, text/javascript
+        Content-Type: application/json
+
+        {
+            "seat_guids": ["6c0e29e5-05d6-421f-99f3-afd01478ecad", "c2899340-e2e7-4d05-8100-000a4b6d7cf4"]
+        }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+        HTTP/1.1 200 OK
+        Vary: Accept
+        Content-Type: application/json
+
+        {}
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param subevent_id: The ``id`` field of the subevent to modify
+   :statuscode 200: no error
+   :statuscode 400: The seat could not be modified due to invalid submitted data
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to change this resource.
+   :statuscode 404: Seat does not exist; or the endpoint without subevent id was used for event with subevents, or vice versa.
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/seats/bulk_unblock/
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/subevents/(id)/seats/bulk_unblock/
+
+   Set the ``blocked`` attribute to ``false`` for a large number of seats at once.
+   You can pass either a list of ``id`` values or a list of ``seat_guid`` values.
+   You can pass up to 10,000 seats in one request.
+
+   The endpoint will return an error if you pass a seat ID that does not exist.
+   However, it will not return an error if one of the passed seat is already unblocked or is sold.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+        PATCH /api/v1/organizers/bigevents/events/sampleconf/seats/bulk_unblock/ HTTP/1.1
+        Host: pretix.eu
+        Accept: application/json, text/javascript
+        Content-Type: application/json
+
+        {
+            "ids": [12, 45, 56]
+        }
+
+   or
+
+   .. sourcecode:: http
+
+        PATCH /api/v1/organizers/bigevents/events/sampleconf/seats/bulk_unblock/ HTTP/1.1
+        Host: pretix.eu
+        Accept: application/json, text/javascript
+        Content-Type: application/json
+
+        {
+            "seat_guids": ["6c0e29e5-05d6-421f-99f3-afd01478ecad", "c2899340-e2e7-4d05-8100-000a4b6d7cf4"]
+        }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+        HTTP/1.1 200 OK
+        Vary: Accept
+        Content-Type: application/json
+
+        {}
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param subevent_id: The ``id`` field of the subevent to modify
+   :statuscode 200: no error
+   :statuscode 400: The seat could not be modified due to invalid submitted data
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to change this resource.
+   :statuscode 404: Seat does not exist; or the endpoint without subevent id was used for event with subevents, or vice versa.
@@ -1,3 +1,8 @@
+.. spelling:word-list::
+
+   EN16931
+   DSFinV-K
+
 .. _rest-taxrules:

 Tax rules
@@ -18,6 +23,7 @@ id                                    integer                    Internal ID of
 name                                  multi-lingual string       The tax rules' name
 internal_name                         string                     An optional name that is only used in the backend
 rate                                  decimal (string)           Tax rate in percent
+code                                  string                     Codified reason for tax rate (or ``null``), see :ref:`rest-taxcodes`.
 price_includes_tax                    boolean                    If ``true`` (default), tax is assumed to be included in
                                                                 the specified product price
 eu_reverse_charge                     boolean                    **DEPRECATED**. If ``true``, EU reverse charge rules
@@ -42,6 +48,42 @@ custom_rules                          object                     Dynamic rules s

    The ``custom_rules`` attribute has been added.

+.. versionchanged:: 2023.8
+
+    The ``code`` attribute has been added.
+
+.. _rest-taxcodes:
+
+Tax codes
+---------
+
+For integration with external systems, such as electronic invoicing or bookkeeping systems, the tax rate itself is often
+not sufficient information. For example, there could be many different reasons why a sale has a tax rate of 0 %, but the
+external handling of the transaction depends on which reason applies. Therefore, pretix allows to supply a codified
+reason that allows us to understand what the specific legal situation is. These tax codes are modeled after a combination
+of the code lists from the European standard EN16931 and the German standard DSFinV-K.
+
+The following codes are supported:
+
+- ``S/standard`` -- Standard VAT rate in the merchant country
+- ``S/reduced`` -- Reduced VAT rate in the merchant country
+- ``S/averaged`` -- Averaged VAT rate in the merchant country (known use case: agricultural businesses in Germany)
+- ``AE`` -- Reverse charge
+- ``O`` -- Services outside of scope of tax
+- ``E`` -- Exempt from tax (no reason given)
+- ``E/<reason>`` -- Exempt from tax, where ``<reason>`` is one of the codes listed in the `VATEX code list`_ version 5.0.
+- ``Z`` -- Zero-rated goods
+- ``G`` -- Free export item, VAT not charged
+- ``K`` -- VAT exempt for EEA intra-community supply of goods and services
+- ``L`` -- Canary Islands general indirect tax
+- ``M`` -- Tax for production, services and importation in Ceuta and Melilla
+- ``B`` -- Transferred (VAT), only in Italy
+
+The code set in the ``code`` attribute of the tax rule is used by default. When ``eu_reverse_charge`` is active, the
+code is replaced by ``AE`` for reverse charge sales and by ``O`` for non-EU sales. When configuring custom rules, you
+should actively set a ``"code"`` key on each rule. Only for ``"action": "reverse"`` we automatically apply the code
+``AE``, in all other cases the default ``code`` of the tax rule is selected.
+
 Endpoints
 ---------

@@ -74,6 +116,7 @@ Endpoints
            "id": 1,
            "name": {"en": "VAT"},
            "internal_name": "VAT",
+            "code": "S/standard",
            "rate": "19.00",
            "price_includes_tax": true,
            "eu_reverse_charge": false,
@@ -115,6 +158,7 @@ Endpoints
        "id": 1,
        "name": {"en": "VAT"},
        "internal_name": "VAT",
+        "code": "S/standard",
        "rate": "19.00",
        "price_includes_tax": true,
        "eu_reverse_charge": false,
@@ -164,6 +208,7 @@ Endpoints
        "id": 1,
        "name": {"en": "VAT"},
        "internal_name": "VAT",
+        "code": "S/standard",
        "rate": "19.00",
        "price_includes_tax": true,
        "eu_reverse_charge": false,
@@ -212,6 +257,7 @@ Endpoints
        "id": 1,
        "name": {"en": "VAT"},
        "internal_name": "VAT",
+        "code": "S/standard",
        "rate": "20.00",
        "price_includes_tax": true,
        "eu_reverse_charge": false,
@@ -258,3 +304,4 @@ Endpoints
   :statuscode 403: The requested organizer/event/rule does not exist **or** you have no permission to change it **or** this tax rule cannot be deleted since it is currently in use.

 .. _here: https://github.com/pretix/pretix/blob/master/src/pretix/static/schema/tax-rules-custom.schema.json
+.. _VATEX code list: https://ec.europa.eu/digital-building-blocks/sites/display/DIGITAL/Registry+of+supporting+artefacts+to+implement+EN16931#RegistryofsupportingartefactstoimplementEN16931-Codelists
@@ -44,7 +44,7 @@ dependencies = [
  "django-formtools==2.5.1",
  "django-hierarkey==1.2.*",
  "django-hijack==3.7.*",
-  "django-i18nfield==1.9.*,>=1.9.4",
+  "django-i18nfield==1.10.*",
  "django-libsass==0.9",
  "django-localflavor==4.0",
  "django-markup",
@@ -53,7 +53,7 @@ dependencies = [
  "django-phonenumber-field==7.3.*",
  "django-redis==5.4.*",
  "django-scopes==2.0.*",
-  "django-statici18n==2.5.*",
+  "django-statici18n==2.6.*",
  "djangorestframework==3.15.*",
  "dnspython==2.7.*",
  "drf_ujson2==1.7.*",
@@ -76,7 +76,7 @@ dependencies = [
  "phonenumberslite==8.13.*",
  "Pillow==11.0.*",
  "pretix-plugin-build",
-  "protobuf==5.28.*",
+  "protobuf==5.29.*",
  "psycopg2-binary",
  "pycountry",
  "pycparser==2.22",
@@ -97,17 +97,17 @@ dependencies = [
  "text-unidecode==1.*",
  "tlds>=2020041600",
  "tqdm==4.*",
-  "ua-parser==0.18.*",
+  "ua-parser==1.0.*",
  "vat_moss_forked==2020.3.20.0.11.0",
  "vobject==0.9.*",
-  "webauthn==2.2.*",
+  "webauthn==2.4.*",
  "zeep==4.3.*"
 ]

 [project.optional-dependencies]
 memcached = ["pylibmc"]
 dev = [
-  "aiohttp==3.10.*",
+  "aiohttp==3.11.*",
  "coverage",
  "coveralls",
  "fakeredis==2.26.*",
@@ -19,4 +19,4 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-__version__ = "2024.11.0.dev0"
+__version__ = "2024.12.0.dev0"
@@ -35,7 +35,7 @@
 import logging

 from django.conf import settings
-from django.core.exceptions import PermissionDenied, ValidationError
+from django.core.exceptions import PermissionDenied
 from django.db import transaction
 from django.utils.crypto import get_random_string
 from django.utils.functional import cached_property
@@ -43,6 +43,7 @@ from django.utils.translation import gettext as _
 from django_countries.serializers import CountryFieldMixin
 from pytz import common_timezones
 from rest_framework import serializers
+from rest_framework.exceptions import ValidationError
 from rest_framework.fields import ChoiceField, Field
 from rest_framework.relations import SlugRelatedField

@@ -678,8 +679,8 @@ class TaxRuleSerializer(CountryFieldMixin, I18nAwareModelSerializer):

    class Meta:
        model = TaxRule
-        fields = ('id', 'name', 'rate', 'price_includes_tax', 'eu_reverse_charge', 'home_country', 'internal_name',
-                  'keep_gross_if_rate_changes', 'custom_rules')
+        fields = ('id', 'name', 'rate', 'code', 'price_includes_tax', 'eu_reverse_charge', 'home_country',
+                  'internal_name', 'keep_gross_if_rate_changes', 'custom_rules')


 class EventSettingsSerializer(SettingsSerializer):
@@ -989,6 +990,40 @@ def prefetch_by_id(items, qs, id_attr, target_attr):
            setattr(item, target_attr, result.get(getattr(item, id_attr)))


+class SeatBulkBlockInputSerializer(serializers.Serializer):
+    ids = serializers.ListField(child=serializers.IntegerField(), required=False, allow_empty=True)
+    seat_guids = serializers.ListField(child=serializers.CharField(), required=False, allow_empty=True)
+
+    def to_internal_value(self, data):
+        data = super().to_internal_value(data)
+
+        if data.get("seat_guids") and data.get("ids"):
+            raise ValidationError("Please pass either seat_guids or ids.")
+
+        if data.get("seat_guids"):
+            seat_ids = data["seat_guids"]
+            if len(seat_ids) > 10000:
+                raise ValidationError({"seat_guids": ["Please do not pass over 10000 seats."]})
+
+            seats = {s.seat_guid: s for s in self.context["queryset"].filter(seat_guid__in=seat_ids)}
+            for s in seat_ids:
+                if s not in seats:
+                    raise ValidationError({"seat_guids": [f"The seat '{s}' does not exist."]})
+        elif data.get("ids"):
+            seat_ids = data["ids"]
+            if len(seat_ids) > 10000:
+                raise ValidationError({"ids": ["Please do not pass over 10000 seats."]})
+
+            seats = self.context["queryset"].in_bulk(seat_ids)
+            for s in seat_ids:
+                if s not in seats:
+                    raise ValidationError({"ids": [f"The seat '{s}' does not exist."]})
+        else:
+            raise ValidationError("Please pass either seat_guids or ids.")
+
+        return {"seats": seats.values()}
+
+
 class SeatSerializer(I18nAwareModelSerializer):
    orderposition = serializers.IntegerField(source='orderposition_id')
    cartposition = serializers.IntegerField(source='cartposition_id')
@@ -19,57 +19,8 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-from django.conf import settings
 from django.core.validators import URLValidator
-from i18nfield.fields import I18nCharField, I18nTextField
-from i18nfield.strings import LazyI18nString
-from rest_framework.exceptions import ValidationError
-from rest_framework.fields import Field
-from rest_framework.serializers import ModelSerializer
-
-
-class I18nField(Field):
-    def __init__(self, **kwargs):
-        self.allow_blank = kwargs.pop('allow_blank', False)
-        self.trim_whitespace = kwargs.pop('trim_whitespace', True)
-        self.max_length = kwargs.pop('max_length', None)
-        self.min_length = kwargs.pop('min_length', None)
-        super().__init__(**kwargs)
-
-    def to_representation(self, value):
-        if hasattr(value, 'data'):
-            if isinstance(value.data, dict):
-                return value.data
-            elif value.data is None:
-                return None
-            else:
-                return {
-                    settings.LANGUAGE_CODE: str(value.data)
-                }
-        elif value is None:
-            return None
-        else:
-            return {
-                settings.LANGUAGE_CODE: str(value)
-            }
-
-    def to_internal_value(self, data):
-        if isinstance(data, str):
-            return LazyI18nString(data)
-        elif isinstance(data, dict):
-            if any([k not in dict(settings.LANGUAGES) for k in data.keys()]):
-                raise ValidationError('Invalid languages included.')
-            return LazyI18nString(data)
-        else:
-            raise ValidationError('Invalid data type.')
-
-
-class I18nAwareModelSerializer(ModelSerializer):
-    pass
-
-
-I18nAwareModelSerializer.serializer_field_mapping[I18nCharField] = I18nField
-I18nAwareModelSerializer.serializer_field_mapping[I18nTextField] = I18nField
+from i18nfield.rest_framework import I18nAwareModelSerializer, I18nField


 class I18nURLField(I18nField):
@@ -84,3 +35,10 @@ class I18nURLField(I18nField):
        else:
            URLValidator()(value.data)
        return value
+
+
+__all__ = [
+    "I18nAwareModelSerializer",  # for backwards compatibility
+    "I18nField",  # for backwards compatibility
+    "I18nURLField",
+]
@@ -512,11 +512,12 @@ class OrderPositionSerializer(I18nAwareModelSerializer):
                  'company', 'street', 'zipcode', 'city', 'country', 'state', 'discount',
                  'attendee_email', 'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'subevent', 'checkins',
                  'print_logs', 'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data', 'seat', 'canceled',
-                  'valid_from', 'valid_until', 'blocked', 'voucher_budget_use')
+                  'print_logs', 'downloads', 'answers', 'tax_rule', 'tax_code', 'pseudonymization_id', 'pdf_data', 'seat',
+                  'canceled', 'valid_from', 'valid_until', 'blocked', 'voucher_budget_use')
        read_only_fields = (
            'id', 'order', 'positionid', 'item', 'variation', 'price', 'voucher', 'tax_rate', 'tax_value', 'secret',
-            'addon_to', 'subevent', 'checkins', 'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data',
-            'seat', 'canceled', 'discount', 'valid_from', 'valid_until', 'blocked', 'voucher_budget_use'
+            'addon_to', 'subevent', 'checkins', 'downloads', 'answers', 'tax_rule', 'tax_code', 'pseudonymization_id',
+            'pdf_data', 'seat', 'canceled', 'discount', 'valid_from', 'valid_until', 'blocked', 'voucher_budget_use'
        )

    def __init__(self, *args, **kwargs):
@@ -642,7 +643,8 @@ class OrderPaymentDateField(serializers.DateField):
 class OrderFeeSerializer(I18nAwareModelSerializer):
    class Meta:
        model = OrderFee
-        fields = ('id', 'fee_type', 'value', 'description', 'internal_type', 'tax_rate', 'tax_value', 'tax_rule', 'canceled')
+        fields = ('id', 'fee_type', 'value', 'description', 'internal_type', 'tax_rate', 'tax_value', 'tax_rule',
+                  'tax_code', 'canceled')


 class PaymentURLField(serializers.URLField):
@@ -1676,7 +1678,7 @@ class InlineInvoiceLineSerializer(I18nAwareModelSerializer):
    class Meta:
        model = InvoiceLine
        fields = ('position', 'description', 'item', 'variation', 'subevent', 'attendee_name', 'event_date_from',
-                  'event_date_to', 'gross_value', 'tax_value', 'tax_rate', 'tax_name', 'fee_type',
+                  'event_date_to', 'gross_value', 'tax_value', 'tax_rate', 'tax_code', 'tax_name', 'fee_type',
                  'fee_internal_type', 'event_location')


@@ -40,6 +40,7 @@ from django.utils.timezone import now
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
 from rest_framework import serializers, views, viewsets
+from rest_framework.decorators import action
 from rest_framework.exceptions import (
    NotFound, PermissionDenied, ValidationError,
 )
@@ -50,8 +51,9 @@ from pretix.api.auth.permission import EventCRUDPermission
 from pretix.api.pagination import TotalOrderingFilter
 from pretix.api.serializers.event import (
    CloneEventSerializer, DeviceEventSettingsSerializer, EventSerializer,
-    EventSettingsSerializer, ItemMetaPropertiesSerializer, SeatSerializer,
-    SubEventSerializer, TaxRuleSerializer,
+    EventSettingsSerializer, ItemMetaPropertiesSerializer,
+    SeatBulkBlockInputSerializer, SeatSerializer, SubEventSerializer,
+    TaxRuleSerializer,
 )
 from pretix.api.views import ConditionalListView
 from pretix.base.models import (
@@ -237,9 +239,9 @@ class EventViewSet(viewsets.ModelViewSet):
            disabled = {m: 'disabled' for m in current_plugins_value if m not in updated_plugins_value}
            changed = merge_dicts(enabled, disabled)

-            for module, action in changed.items():
+            for module, operation in changed.items():
                serializer.instance.log_action(
-                    'pretix.event.plugins.' + action,
+                    'pretix.event.plugins.' + operation,
                    user=self.request.user,
                    auth=self.request.auth,
                    data={'plugin': module}
@@ -744,3 +746,24 @@ class SeatViewSet(ConditionalListView, viewsets.ModelViewSet):
            auth=self.request.auth,
            data={"seats": [serializer.instance.pk]},
        )
+
+    def bulk_change_blocked(self, blocked):
+        s = SeatBulkBlockInputSerializer(
+            data=self.request.data,
+            context={"event": self.request.event, "queryset": self.get_queryset()},
+        )
+        s.is_valid(raise_exception=True)
+
+        seats = s.validated_data["seats"]
+        for seat in seats:
+            seat.blocked = blocked
+        Seat.objects.bulk_update(seats, ["blocked"], batch_size=1000)
+        return Response({})
+
+    @action(methods=["POST"], detail=False)
+    def bulk_block(self, request, *args, **kwargs):
+        return self.bulk_change_blocked(True)
+
+    @action(methods=["POST"], detail=False)
+    def bulk_unblock(self, request, *args, **kwargs):
+        return self.bulk_change_blocked(False)
@@ -35,6 +35,7 @@ from django.db.models import (
 from django.db.models.functions import Coalesce, Concat
 from django.http import FileResponse, HttpResponse
 from django.shortcuts import get_object_or_404
+from django.utils import formats
 from django.utils.timezone import make_aware, now
 from django.utils.translation import gettext as _
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
@@ -67,6 +68,7 @@ from pretix.api.serializers.orderchange import (
    OrderPositionInfoPatchSerializer,
 )
 from pretix.api.views import RichOrderingFilter
+from pretix.base.decimal import round_decimal
 from pretix.base.i18n import language
 from pretix.base.models import (
    CachedCombinedTicket, CachedTicket, Checkin, Device, EventMetaValue,
@@ -97,7 +99,6 @@ from pretix.base.services.tickets import generate
 from pretix.base.signals import (
    order_modified, order_paid, order_placed, register_ticket_outputs,
 )
-from pretix.base.templatetags.money import money_filter
 from pretix.control.signals import order_search_filter_q
 from pretix.helpers import OF_SELF

@@ -601,7 +602,7 @@ class EventOrderViewSet(OrderViewSetMixin, viewsets.ModelViewSet):
            order.status in (Order.STATUS_PAID, Order.STATUS_PENDING)
            and order.invoices.filter(is_cancellation=True).count() >= order.invoices.filter(is_cancellation=False).count()
        )
-        if self.request.event.settings.get('invoice_generate') not in ('admin', 'user', 'paid', 'True') or not invoice_qualified(order):
+        if self.request.event.settings.get('invoice_generate') not in ('admin', 'user', 'paid', 'user_paid', 'True') or not invoice_qualified(order):
            return Response(
                {'detail': _('You cannot generate an invoice for this order.')},
                status=status.HTTP_400_BAD_REQUEST
@@ -1228,9 +1229,10 @@ class OrderPositionViewSet(viewsets.ModelViewSet):
        price = get_price(**kwargs)
        tr = kwargs.get('tax_rule', kwargs.get('item').tax_rule)
        with language(data.get('locale') or self.request.event.settings.locale, self.request.event.settings.region):
+            gross_formatted = formats.localize_input(round_decimal(price.gross, self.request.event.currency))
            return Response({
                'gross': price.gross,
-                'gross_formatted': money_filter(price.gross, self.request.event.currency, hide_currency=True),
+                'gross_formatted': gross_formatted,
                'net': price.net,
                'rate': price.rate,
                'name': str(price.name),
@@ -152,7 +152,7 @@ class NativeAuthBackend(BaseAuthBackend):
        to log in.
        """
        d = OrderedDict([
-            ('email', forms.EmailField(label=_("E-mail"), max_length=254,
+            ('email', forms.EmailField(label=_("Email"), max_length=254,
                                       widget=forms.EmailInput(attrs={'autofocus': 'autofocus'}))),
            ('password', forms.CharField(label=_("Password"), widget=forms.PasswordInput,
                                         max_length=4096)),
@@ -35,6 +35,7 @@ from django.utils.translation import get_language, gettext_lazy as _
 from pretix.base.models import Event
 from pretix.base.signals import register_html_mail_renderers
 from pretix.base.templatetags.rich_text import markdown_compile_email
+from pretix.helpers.format import SafeFormatter, format_map

 from pretix.base.services.placeholders import (  # noqa
    get_available_placeholders, PlaceholderContext
@@ -68,7 +69,7 @@ def test_custom_smtp_backend(backend: T, from_addr: str) -> None:

 class BaseHTMLMailRenderer:
    """
-    This is the base class for all HTML e-mail renderers.
+    This is the base class for all HTML email renderers.
    """

    def __init__(self, event: Event, organizer=None):
@@ -79,7 +80,7 @@ class BaseHTMLMailRenderer:
        return self.identifier

    def render(self, plain_body: str, plain_signature: str, subject: str, order=None,
-               position=None) -> str:
+               position=None, context=None) -> str:
        """
        This method should generate the HTML part of the email.

@@ -88,6 +89,7 @@ class BaseHTMLMailRenderer:
        :param subject: The email subject.
        :param order: The order if this email is connected to one, otherwise ``None``.
        :param position: The order position if this email is connected to one, otherwise ``None``.
+        :param context: Context to use to render placeholders in the plain body
        :return: An HTML string
        """
        raise NotImplementedError()
@@ -134,8 +136,10 @@ class TemplateBasedMailRenderer(BaseHTMLMailRenderer):
    def compile_markdown(self, plaintext):
        return markdown_compile_email(plaintext)

-    def render(self, plain_body: str, plain_signature: str, subject: str, order, position) -> str:
+    def render(self, plain_body: str, plain_signature: str, subject: str, order, position, context) -> str:
        body_md = self.compile_markdown(plain_body)
+        if context:
+            body_md = format_map(body_md, context=context, mode=SafeFormatter.MODE_RICH_TO_HTML)
        htmlctx = {
            'site': settings.PRETIX_INSTANCE_NAME,
            'site_url': settings.SITE_URL,
@@ -64,7 +64,7 @@ class CustomerListExporter(OrganizerLevelExportMixin, ListExporter):
            _('Customer ID'),
            _('SSO provider'),
            _('External identifier'),
-            _('E-mail'),
+            _('Email'),
            _('Phone number'),
            _('Full name'),
        ]
@@ -199,7 +199,7 @@ class InvoiceDataExporter(InvoiceExporterMixin, MultiSheetListExporter):
                _('Invoice number'),
                _('Date'),
                _('Order code'),
-                _('E-mail address'),
+                _('Email address'),
                _('Invoice type'),
                _('Cancellation of'),
                _('Language'),
@@ -326,7 +326,7 @@ class InvoiceDataExporter(InvoiceExporterMixin, MultiSheetListExporter):
                _('Event start date'),
                _('Date'),
                _('Order code'),
-                _('E-mail address'),
+                _('Email address'),
                _('Invoice type'),
                _('Cancellation of'),
                _('Invoice sender:') + ' ' + _('Name'),
@@ -284,7 +284,7 @@ class OrderListExporter(MultiSheetListExporter):
        headers.append(_('Comment'))
        headers.append(_('Follow-up date'))
        headers.append(_('Positions'))
-        headers.append(_('E-mail address verified'))
+        headers.append(_('Email address verified'))
        headers.append(_('External customer ID'))
        headers.append(_('Payment providers'))
        if form_data.get('include_payment_amounts'):
@@ -655,7 +655,7 @@ class OrderListExporter(MultiSheetListExporter):
        headers += [
            _('Sales channel'),
            _('Order locale'),
-            _('E-mail address verified'),
+            _('Email address verified'),
            _('External customer ID'),
            _('Check-in lists'),
            _('Payment providers'),
@@ -100,7 +100,7 @@ class MarkdownTextarea(forms.Textarea):


 class I18nMarkdownTextarea(i18nfield.forms.I18nTextarea):
-    def format_output(self, rendered_widgets) -> str:
+    def format_output(self, rendered_widgets, id_) -> str:
        rendered_widgets = rendered_widgets + [
            '<div class="i18n-field-markdown-note">%s</div>' % (
                _("You can use {markup_name} in this field.").format(
@@ -108,11 +108,11 @@ class I18nMarkdownTextarea(i18nfield.forms.I18nTextarea):
                )
            )
        ]
-        return super().format_output(rendered_widgets)
+        return super().format_output(rendered_widgets, id_)


 class I18nMarkdownTextInput(i18nfield.forms.I18nTextInput):
-    def format_output(self, rendered_widgets) -> str:
+    def format_output(self, rendered_widgets, id_) -> str:
        rendered_widgets = rendered_widgets + [
            '<div class="i18n-field-markdown-note">%s</div>' % (
                _("You can use {markup_name} in this field.").format(
@@ -120,7 +120,7 @@ class I18nMarkdownTextInput(i18nfield.forms.I18nTextInput):
                )
            )
        ]
-        return super().format_output(rendered_widgets)
+        return super().format_output(rendered_widgets, id_)


 SECRET_REDACTED = '*****'
@@ -254,7 +254,7 @@ class PasswordRecoverForm(forms.Form):

 class PasswordForgotForm(forms.Form):
    email = forms.EmailField(
-        label=_('E-mail'),
+        label=_('Email'),
    )

    def __init__(self, *args, **kwargs):
@@ -54,6 +54,7 @@ from django.core.validators import (
 from django.db.models import QuerySet
 from django.forms import Select, widgets
 from django.forms.widgets import FILE_INPUT_CONTRADICTION
+from django.urls import reverse
 from django.utils.formats import date_format
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
@@ -77,7 +78,7 @@ from pretix.base.i18n import (
    get_babel_locale, get_language_without_region, language,
 )
 from pretix.base.models import InvoiceAddress, Item, Question, QuestionOption
-from pretix.base.models.tax import VAT_ID_COUNTRIES, ask_for_vat_id
+from pretix.base.models.tax import ask_for_vat_id
 from pretix.base.services.tax import (
    VATIDFinalError, VATIDTemporaryError, validate_vat_id,
 )
@@ -276,6 +277,10 @@ class NamePartsFormField(forms.MultiValueField):
        return value


+def name_parts_is_empty(name_parts_dict):
+    return not any(k != "_scheme" and v for k, v in name_parts_dict.items())
+
+
 class WrappedPhonePrefixSelect(Select):
    initial = None

@@ -602,6 +607,7 @@ class BaseQuestionsForm(forms.Form):
        questions = pos.item.questions_to_ask
        event = kwargs.pop('event')
        self.all_optional = kwargs.pop('all_optional', False)
+        self.attendee_addresses_required = event.settings.attendee_addresses_required and not self.all_optional

        super().__init__(*args, **kwargs)

@@ -676,7 +682,7 @@ class BaseQuestionsForm(forms.Form):

        if item.ask_attendee_data and event.settings.attendee_addresses_asked:
            add_fields['street'] = forms.CharField(
-                required=event.settings.attendee_addresses_required and not self.all_optional,
+                required=self.attendee_addresses_required,
                label=_('Address'),
                widget=forms.Textarea(attrs={
                    'rows': 2,
@@ -686,7 +692,7 @@ class BaseQuestionsForm(forms.Form):
                initial=(cartpos.street if cartpos else orderpos.street),
            )
            add_fields['zipcode'] = forms.CharField(
-                required=event.settings.attendee_addresses_required and not self.all_optional,
+                required=False,
                max_length=30,
                label=_('ZIP code'),
                initial=(cartpos.zipcode if cartpos else orderpos.zipcode),
@@ -695,7 +701,7 @@ class BaseQuestionsForm(forms.Form):
                }),
            )
            add_fields['city'] = forms.CharField(
-                required=event.settings.attendee_addresses_required and not self.all_optional,
+                required=False,
                label=_('City'),
                max_length=255,
                initial=(cartpos.city if cartpos else orderpos.city),
@@ -707,11 +713,12 @@ class BaseQuestionsForm(forms.Form):
            add_fields['country'] = CountryField(
                countries=CachedCountries
            ).formfield(
-                required=event.settings.attendee_addresses_required and not self.all_optional,
+                required=self.attendee_addresses_required,
                label=_('Country'),
                initial=country,
                widget=forms.Select(attrs={
                    'autocomplete': 'country',
+                    'data-country-information-url': reverse('js_helpers.states'),
                }),
            )
            c = [('', pgettext_lazy('address', 'Select state'))]
@@ -946,9 +953,9 @@ class BaseQuestionsForm(forms.Form):
        d = super().clean()

        if self.address_validation:
-            self.cleaned_data = d = validate_address(d, True)
+            self.cleaned_data = d = validate_address(d, all_optional=not self.attendee_addresses_required)

-        if d.get('city') and d.get('country') and str(d['country']) in COUNTRIES_WITH_STATE_IN_ADDRESS:
+        if d.get('street') and d.get('country') and str(d['country']) in COUNTRIES_WITH_STATE_IN_ADDRESS:
            if not d.get('state'):
                self.add_error('state', _('This field is required.'))

@@ -1005,7 +1012,7 @@ class BaseInvoiceAddressForm(forms.ModelForm):
            'street': forms.Textarea(attrs={
                'rows': 2,
                'placeholder': _('Street and Number'),
-                'autocomplete': 'street-address'
+                'autocomplete': 'street-address',
            }),
            'beneficiary': forms.Textarea(attrs={'rows': 3}),
            'country': forms.Select(attrs={
@@ -1021,13 +1028,25 @@ class BaseInvoiceAddressForm(forms.ModelForm):
                'data-display-dependency': '#id_is_business_1',
                'autocomplete': 'organization',
            }),
-            'vat_id': forms.TextInput(attrs={'data-display-dependency': '#id_is_business_1', 'data-countries-with-vat-id': ','.join(VAT_ID_COUNTRIES)}),
+            'vat_id': forms.TextInput(attrs={'data-display-dependency': '#id_is_business_1'}),
            'internal_reference': forms.TextInput,
        }
        labels = {
            'is_business': ''
        }

+    @property
+    def ask_vat_id(self):
+        return self.event.settings.invoice_address_vatid
+
+    @property
+    def address_required(self):
+        return self.event.settings.invoice_address_required
+
+    @property
+    def company_required(self):
+        return self.event.settings.invoice_address_company_required
+
    def __init__(self, *args, **kwargs):
        self.event = event = kwargs.pop('event')
        self.request = kwargs.pop('request', None)
@@ -1039,7 +1058,11 @@ class BaseInvoiceAddressForm(forms.ModelForm):
            kwargs['initial']['country'] = guess_country_from_request(self.request, self.event)

        super().__init__(*args, **kwargs)
-        if not event.settings.invoice_address_vatid:
+
+        self.fields["company"].widget.attrs["data-display-dependency"] = f'#id_{self.add_prefix("is_business")}_1'
+        self.fields["vat_id"].widget.attrs["data-display-dependency"] = f'#id_{self.add_prefix("is_business")}_1'
+
+        if not self.ask_vat_id:
            del self.fields['vat_id']
        elif self.validate_vat_id:
            self.fields['vat_id'].help_text = '<br/>'.join([
@@ -1055,6 +1078,7 @@ class BaseInvoiceAddressForm(forms.ModelForm):
            ])

        self.fields['country'].choices = CachedCountries()
+        self.fields['country'].widget.attrs['data-country-information-url'] = reverse('js_helpers.states')

        c = [('', pgettext_lazy('address', 'Select state'))]
        fprefix = self.prefix + '-' if self.prefix else ''
@@ -1083,18 +1107,22 @@ class BaseInvoiceAddressForm(forms.ModelForm):
        )
        self.fields['state'].widget.is_required = True

+        self.fields['street'].required = False
+        self.fields['zipcode'].required = False
+        self.fields['city'].required = False
+
        # Without JavaScript the VAT ID field is not hidden, so we empty the field if a country outside the EU is selected.
        if cc and not ask_for_vat_id(cc) and fprefix + 'vat_id' in self.data:
            self.data = self.data.copy()
            del self.data[fprefix + 'vat_id']

-        if not event.settings.invoice_address_required or self.all_optional:
+        if not self.address_required or self.all_optional:
            for k, f in self.fields.items():
                f.required = False
                f.widget.is_required = False
                if 'required' in f.widget.attrs:
                    del f.widget.attrs['required']
-        elif event.settings.invoice_address_company_required and not self.all_optional:
+        elif self.company_required and not self.all_optional:
            self.initial['is_business'] = True

            self.fields['is_business'].widget = BusinessBooleanRadio(require_business=True)
@@ -1111,11 +1139,11 @@ class BaseInvoiceAddressForm(forms.ModelForm):
            label=_('Name'),
            initial=self.instance.name_parts,
        )
-        if event.settings.invoice_address_required and not event.settings.invoice_address_company_required and not self.all_optional:
+        if self.address_required and not self.company_required and not self.all_optional:
            if not event.settings.invoice_name_required:
-                self.fields['name_parts'].widget.attrs['data-required-if'] = '#id_is_business_0'
+                self.fields['name_parts'].widget.attrs['data-required-if'] = f'#id_{self.add_prefix("is_business")}_0'
            self.fields['name_parts'].widget.attrs['data-no-required-attr'] = '1'
-            self.fields['company'].widget.attrs['data-required-if'] = '#id_is_business_1'
+            self.fields['company'].widget.attrs['data-required-if'] = f'#id_{self.add_prefix("is_business")}_1'

        if not event.settings.invoice_address_beneficiary:
            del self.fields['beneficiary']
@@ -1135,16 +1163,19 @@ class BaseInvoiceAddressForm(forms.ModelForm):
            validate_address  # local import to prevent impact on startup time

        data = self.cleaned_data
+
        if not data.get('is_business'):
            data['company'] = ''
            data['vat_id'] = ''
        if data.get('is_business') and not ask_for_vat_id(data.get('country')):
            data['vat_id'] = ''
-        if self.event.settings.invoice_address_required:
+        if self.address_validation and self.address_required and not self.all_optional:
            if data.get('is_business') and not data.get('company'):
-                raise ValidationError(_('You need to provide a company name.'))
-            if not data.get('is_business') and not data.get('name_parts'):
+                raise ValidationError({"company": _('You need to provide a company name.')})
+            if not data.get('is_business') and name_parts_is_empty(data.get('name_parts', {})):
                raise ValidationError(_('You need to provide your name.'))
+            if not data.get('street') and not data.get('zipcode') and not data.get('city'):
+                raise ValidationError({"street": _('This field is required.')})

        if 'vat_id' in self.changed_data or not data.get('vat_id'):
            self.instance.vat_id_validated = False
@@ -1156,7 +1187,7 @@ class BaseInvoiceAddressForm(forms.ModelForm):

        if all(
                not v for k, v in data.items() if k not in ('is_business', 'country', 'name_parts')
-        ) and len(data.get('name_parts', {})) == 1:
+        ) and name_parts_is_empty(data.get('name_parts', {})):
            # Do not save the country if it is the only field set -- we don't know the user even checked it!
            self.cleaned_data['country'] = ''

@@ -48,10 +48,10 @@ from pretix.control.forms import SingleLanguageWidget

 class UserSettingsForm(forms.ModelForm):
    error_messages = {
-        'duplicate_identifier': _("There already is an account associated with this e-mail address. "
+        'duplicate_identifier': _("There already is an account associated with this email address. "
                                  "Please choose a different one."),
-        'pw_current': _("Please enter your current password if you want to change your e-mail "
-                        "address or password."),
+        'pw_current': _("Please enter your current password if you want to change your email address "
+                        "or password."),
        'pw_current_wrong': _("The current password you entered was not correct."),
        'pw_mismatch': _("Please enter the same password twice"),
        'rate_limit': _("For security reasons, please wait 5 minutes before you try again."),
@@ -81,7 +81,7 @@ class Command(BaseCommand):
            try:
                r = receiver(signal=periodic_task, sender=self)
            except Exception as err:
-                if isinstance(Exception, KeyboardInterrupt):
+                if isinstance(err, KeyboardInterrupt):
                    raise err
                if settings.SENTRY_ENABLED:
                    from sentry_sdk import capture_exception
@@ -37,6 +37,16 @@ class BaseMediaType:
    def verbose_name(self):
        raise NotImplementedError()

+    @property
+    def icon(self):
+        """
+        This can be:
+
+        - The name of a Font Awesome icon to represent this channel type.
+        - The name of a SVG icon file that is resolvable through the static file system. We recommend to design for a size of 18x14 pixels.
+        """
+        return "circle"
+
    def generate_identifier(self, organizer):
        if self.medium_created_by_server:
            raise NotImplementedError()
@@ -59,6 +69,7 @@ class BaseMediaType:
 class BarcodePlainMediaType(BaseMediaType):
    identifier = 'barcode'
    verbose_name = _('Barcode / QR-Code')
+    icon = 'qrcode'
    medium_created_by_server = True
    supports_giftcard = False
    supports_orderposition = True
@@ -75,6 +86,7 @@ class BarcodePlainMediaType(BaseMediaType):
 class NfcUidMediaType(BaseMediaType):
    identifier = 'nfc_uid'
    verbose_name = _('NFC UID-based')
+    icon = 'pretixbase/img/media/nfc_uid.svg'
    medium_created_by_server = False
    supports_giftcard = True
    supports_orderposition = False
@@ -114,6 +126,7 @@ class NfcUidMediaType(BaseMediaType):
 class NfcMf0aesMediaType(BaseMediaType):
    identifier = 'nfc_mf0aes'
    verbose_name = 'NFC Mifare Ultralight AES'
+    icon = 'pretixbase/img/media/nfc_secure.svg'
    medium_created_by_server = False
    supports_giftcard = True
    supports_orderposition = False
@@ -29,7 +29,7 @@ class Migration(migrations.Migration):
                ('password', models.CharField(verbose_name='password', max_length=128)),
                ('last_login', models.DateTimeField(verbose_name='last login', blank=True, null=True)),
                ('is_superuser', models.BooleanField(verbose_name='superuser status', default=False, help_text='Designates that this user has all permissions without explicitly assigning them.')),
-                ('email', models.EmailField(max_length=191, blank=True, unique=True, verbose_name='E-mail', null=True,
+                ('email', models.EmailField(max_length=191, blank=True, unique=True, verbose_name='Email', null=True,
                                            db_index=True)),
                ('givenname', models.CharField(verbose_name='Given name', max_length=255, blank=True, null=True)),
                ('familyname', models.CharField(verbose_name='Family name', max_length=255, blank=True, null=True)),
@@ -9,6 +9,7 @@ from decimal import Decimal
 import django.core.validators
 import django.db.models.deletion
 import i18nfield.fields
+from argon2.exceptions import HashingError
 from django.conf import settings
 from django.contrib.auth.hashers import make_password
 from django.db import migrations, models
@@ -25,7 +26,14 @@ def initial_user(apps, schema_editor):
    user = User(email='admin@localhost')
    user.is_staff = True
    user.is_superuser = True
-    user.password = make_password('admin')
+    try:
+        user.password = make_password('admin')
+    except HashingError:
+        raise Exception(
+            "Could not hash password of initial user with argon2id. If this is a system with less than 8 CPU cores, "
+            "you might need to disable argon2id by setting `passwords_argon2=off` in the `[django]` section of the "
+            "pretix.cfg configuration file."
+        )
    user.save()


@@ -48,7 +56,7 @@ class Migration(migrations.Migration):
                ('password', models.CharField(max_length=128, verbose_name='password')),
                ('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
                ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
-                ('email', models.EmailField(blank=True, db_index=True, max_length=254, null=True, unique=True, verbose_name='E-mail')),
+                ('email', models.EmailField(blank=True, db_index=True, max_length=254, null=True, unique=True, verbose_name='Email')),
                ('givenname', models.CharField(blank=True, max_length=255, null=True, verbose_name='Given name')),
                ('familyname', models.CharField(blank=True, max_length=255, null=True, verbose_name='Family name')),
                ('is_active', models.BooleanField(default=True, verbose_name='Is active')),
@@ -232,7 +240,7 @@ class Migration(migrations.Migration):
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('code', models.CharField(max_length=16, verbose_name='Order code')),
                ('status', models.CharField(choices=[('n', 'pending'), ('p', 'paid'), ('e', 'expired'), ('c', 'cancelled'), ('r', 'refunded')], max_length=3, verbose_name='Status')),
-                ('email', models.EmailField(blank=True, max_length=254, null=True, verbose_name='E-mail')),
+                ('email', models.EmailField(blank=True, max_length=254, null=True, verbose_name='Email')),
                ('locale', models.CharField(blank=True, max_length=32, null=True, verbose_name='Locale')),
                ('secret', models.CharField(default=pretix.base.models.orders.generate_secret, max_length=32)),
                ('datetime', models.DateTimeField(verbose_name='Date')),
@@ -187,7 +187,7 @@ class Migration(migrations.Migration):
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('code', models.CharField(max_length=16, verbose_name='Order code')),
                ('status', models.CharField(choices=[('n', 'pending'), ('p', 'paid'), ('e', 'expired'), ('c', 'cancelled'), ('r', 'refunded')], max_length=3, verbose_name='Status')),
-                ('email', models.EmailField(blank=True, max_length=254, null=True, verbose_name='E-mail')),
+                ('email', models.EmailField(blank=True, max_length=254, null=True, verbose_name='Email')),
                ('locale', models.CharField(blank=True, max_length=32, null=True, verbose_name='Locale')),
                ('secret', models.CharField(default=pretix.base.models.orders.generate_secret, max_length=32)),
                ('datetime', models.DateTimeField(verbose_name='Date')),
@@ -20,7 +20,7 @@ class Migration(migrations.Migration):
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('created', models.DateTimeField(auto_now_add=True, verbose_name='On waiting list since')),
-                ('email', models.EmailField(max_length=254, verbose_name='E-mail address')),
+                ('email', models.EmailField(max_length=254, verbose_name='Email address')),
                ('locale', models.CharField(default='en', max_length=190)),
                ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='waitinglistentries', to='pretixbase.Event', verbose_name='Event')),
                ('item', models.ForeignKey(help_text='The product the user waits for.', on_delete=django.db.models.deletion.CASCADE, related_name='waitinglistentries', to='pretixbase.Item', verbose_name='Product')),
@@ -35,7 +35,7 @@ class Migration(migrations.Migration):
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('created', models.DateTimeField(auto_now_add=True, verbose_name='On waiting list since')),
-                ('email', models.EmailField(max_length=254, verbose_name='E-mail address')),
+                ('email', models.EmailField(max_length=254, verbose_name='Email address')),
                ('locale', models.CharField(default='en', max_length=190)),
                ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='waitinglistentries', to='pretixbase.Event', verbose_name='Event')),
                ('item', models.ForeignKey(help_text='The product the user waits for.', on_delete=django.db.models.deletion.CASCADE, related_name='waitinglistentries', to='pretixbase.Item', verbose_name='Product')),
@@ -163,7 +163,7 @@ class Migration(migrations.Migration):
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('action_type', models.CharField(max_length=255)),
-                ('method', models.CharField(choices=[('mail', 'E-mail')], max_length=255)),
+                ('method', models.CharField(choices=[('mail', 'Email')], max_length=255)),
                ('event', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE,
                                            to='pretixbase.Event')),
                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
@@ -21,7 +21,7 @@ class Migration(migrations.Migration):
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('action_type', models.CharField(max_length=255)),
-                ('method', models.CharField(choices=[('mail', 'E-mail')], max_length=255)),
+                ('method', models.CharField(choices=[('mail', 'Email')], max_length=255)),
                ('event', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='pretixbase.Event')),
                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
                ('enabled', models.BooleanField(default=True)),
@@ -0,0 +1,41 @@
+# Generated by Django 4.2.8 on 2024-07-02 10:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        (
+            "pretixbase",
+            "0273_remove_checkinlist_auto_checkin_sales_channels",
+        ),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="invoiceline",
+            name="tax_code",
+            field=models.CharField(max_length=190, null=True),
+        ),
+        migrations.AddField(
+            model_name="orderfee",
+            name="tax_code",
+            field=models.CharField(max_length=190, null=True),
+        ),
+        migrations.AddField(
+            model_name="orderposition",
+            name="tax_code",
+            field=models.CharField(max_length=190, null=True),
+        ),
+        migrations.AddField(
+            model_name="taxrule",
+            name="code",
+            field=models.CharField(max_length=190, null=True),
+        ),
+        migrations.AddField(
+            model_name="transaction",
+            name="tax_code",
+            field=models.CharField(max_length=190, null=True),
+        ),
+    ]
@@ -56,7 +56,7 @@ from pretix.base.signals import order_import_columns

 class EmailColumn(ImportColumn):
    identifier = 'email'
-    verbose_name = gettext_lazy('E-mail address')
+    verbose_name = gettext_lazy('Email address')

    def clean(self, value, previous_values):
        if value:
@@ -322,7 +322,7 @@ class AttendeeNamePart(ImportColumn):

 class AttendeeEmail(ImportColumn):
    identifier = 'attendee_email'
-    verbose_name = gettext_lazy('Attendee e-mail address')
+    verbose_name = gettext_lazy('Attendee email address')

    def clean(self, value, previous_values):
        if value:
@@ -441,6 +441,7 @@ class Price(DecimalColumnMixin, ImportColumn):
        position.price = p.gross
        position.tax_rule = position.item.tax_rule
        position.tax_rate = p.rate
+        position.tax_code = p.code
        position.tax_value = p.tax


@@ -584,7 +585,7 @@ class SeatColumn(ImportColumn):
                raise ValidationError(_('Multiple matching seats were found.'))
            except Seat.DoesNotExist:
                raise ValidationError(_('No matching seat was found.'))
-            if not value.is_available() or value in self._cached:
+            if not value.is_available(sales_channel=previous_values.get('sales_channel')) or value in self._cached:
                raise ValidationError(
                    _('The seat you selected has already been taken. Please select a different seat.'))
            self._cached.add(value)
@@ -753,11 +754,11 @@ def get_order_import_columns(event):
        AttendeeState(event),
        Price(event),
        Secret(event),
+        Saleschannel(event),
        SeatColumn(event),
        ValidFrom(event),
        ValidUntil(event),
        Locale(event),
-        Saleschannel(event),
        CheckinAttentionColumn(event),
        CheckinTextColumn(event),
        Expires(event),
@@ -241,7 +241,7 @@ class User(AbstractBaseUser, PermissionsMixin, LoggingMixin):
    REQUIRED_FIELDS = []

    email = models.EmailField(unique=True, db_index=True, null=True, blank=True,
-                              verbose_name=_('E-mail'), max_length=190)
+                              verbose_name=_('Email'), max_length=190)
    fullname = models.CharField(max_length=255, blank=True, null=True,
                                verbose_name=_('Full name'))
    is_active = models.BooleanField(default=True,
@@ -91,7 +91,7 @@ class Customer(LoggedModel):
            ),
        ],
    )
-    email = models.EmailField(db_index=True, null=True, blank=False, verbose_name=_('E-mail'), max_length=190)
+    email = models.EmailField(db_index=True, null=True, blank=False, verbose_name=_('Email'), max_length=190)
    phone = PhoneNumberField(null=True, blank=True, verbose_name=_('Phone number'))
    password = models.CharField(verbose_name=_('Password'), max_length=128)
    name_cached = models.CharField(max_length=255, verbose_name=_('Full name'), blank=True)
@@ -392,7 +392,7 @@ class CustomerSSOClient(LoggedModel):
    SCOPE_CHOICES = (
        ('openid', _('OpenID Connect access (required)')),
        ('profile', _('Profile data (name, addresses)')),
-        ('email', _('E-mail address')),
+        ('email', _('Email address')),
        ('phone', _('Phone number')),
    )

@@ -823,6 +823,9 @@ class Event(EventMixin, LoggedModel):
        self.save()
        self.log_action('pretix.object.cloned', data={'source': other.slug, 'source_id': other.pk})

+        if hasattr(other, 'alternative_domain_assignment'):
+            other.alternative_domain_assignment.domain.event_assignments.create(event=self)
+
        if not self.all_sales_channels:
            self.limit_sales_channels.set(
                self.organizer.sales_channels.filter(
@@ -362,6 +362,7 @@ class InvoiceLine(models.Model):
    tax_value = models.DecimalField(max_digits=13, decimal_places=2, default=Decimal('0.00'))
    tax_rate = models.DecimalField(max_digits=7, decimal_places=2, default=Decimal('0.00'))
    tax_name = models.CharField(max_length=190)
+    tax_code = models.CharField(max_length=190, null=True, blank=True)
    subevent = models.ForeignKey('SubEvent', null=True, blank=True, on_delete=models.PROTECT)
    event_date_from = models.DateTimeField(null=True)
    event_date_to = models.DateTimeField(null=True)
@@ -837,7 +837,7 @@ class Item(LoggedModel):

        if not self.tax_rule:
            t = TaxedPrice(gross=price - bundled_sum, net=price - bundled_sum, tax=Decimal('0.00'),
-                           rate=Decimal('0.00'), name='')
+                           rate=Decimal('0.00'), name='', code=None)
        else:
            t = self.tax_rule.tax(price, base_price_is=base_price_is, invoice_address=invoice_address,
                                  override_tax_rate=override_tax_rate, currency=currency or self.event.currency,
@@ -845,6 +845,7 @@ class Item(LoggedModel):

        if bundled_sum:
            t.name = "MIXED!"
+            t.code = None
            t.gross += bundled_sum
            t.net += bundled_sum_net
            t.tax += bundled_sum_tax
@@ -1258,7 +1259,7 @@ class ItemVariation(models.Model):

        if not self.item.tax_rule:
            t = TaxedPrice(gross=price, net=price, tax=Decimal('0.00'),
-                           rate=Decimal('0.00'), name='')
+                           rate=Decimal('0.00'), name='', code=None)
        else:
            t = self.item.tax_rule.tax(price, base_price_is=base_price_is, currency=currency,
                                       override_tax_rate=override_tax_rate,
@@ -1280,6 +1281,7 @@ class ItemVariation(models.Model):
                    t.net += bprice.net - compare_price.net
                    t.tax += bprice.tax - compare_price.tax
                    t.name = "MIXED!"
+                    t.code = None

        return t

@@ -159,10 +159,24 @@ class Membership(models.Model):
        de = date_format(self.date_end, 'SHORT_DATE_FORMAT')
        return f'{self.membership_type.name}: {self.attendee_name} ({ds} – {de})'

+    @property
+    def percentage_used(self):
+        if self.membership_type.max_usages and self.usages:
+            return int(self.usages / self.membership_type.max_usages * 100)
+        return 0
+
    @property
    def attendee_name(self):
        return build_name(self.attendee_name_parts, fallback_scheme=lambda: self.customer.organizer.settings.name_scheme)

+    @property
+    def expired(self):
+        return time_machine_now() > self.date_end
+
+    @property
+    def not_yet_valid(self):
+        return time_machine_now() < self.date_start
+
    def is_valid(self, ev=None, ticket_valid_from=None, valid_from_not_chosen=False):
        if valid_from_not_chosen:
            return not self.canceled and self.date_end >= time_machine_now()
@@ -43,7 +43,7 @@ class NotificationSetting(models.Model):
    :type enabled: bool
    """
    CHANNELS = (
-        ('mail', _('E-mail')),
+        ('mail', _('Email')),
    )
    user = models.ForeignKey('User', on_delete=models.CASCADE,
                             related_name='notification_settings')
@@ -62,9 +62,10 @@ from django.db.models.signals import post_delete
 from django.dispatch import receiver
 from django.urls import reverse
 from django.utils.crypto import get_random_string, salted_hmac
-from django.utils.encoding import escape_uri_path
+from django.utils.encoding import escape_uri_path, force_str
 from django.utils.formats import date_format
 from django.utils.functional import cached_property
+from django.utils.hashable import make_hashable
 from django.utils.timezone import get_current_timezone, make_aware, now
 from django.utils.translation import gettext_lazy as _, pgettext_lazy
 from django_countries.fields import Country
@@ -242,7 +243,7 @@ class Order(LockModel, LoggedModel):
    )
    email = models.EmailField(
        null=True, blank=True,
-        verbose_name=_('E-mail')
+        verbose_name=_('Email')
    )
    phone = PhoneNumberField(
        null=True, blank=True,
@@ -317,7 +318,7 @@ class Order(LockModel, LoggedModel):
    )
    email_known_to_work = models.BooleanField(
        default=False,
-        verbose_name=_('E-mail address verified')
+        verbose_name=_('Email address verified')
    )
    invoice_dirty = models.BooleanField(
        # Invoice needs to be re-issued when the order is paid again
@@ -1256,7 +1257,7 @@ class Order(LockModel, LoggedModel):
        keys = set(target_transaction_count.keys()) | set(current_transaction_count.keys())
        create = []
        for k in keys:
-            positionid, itemid, variationid, subeventid, price, taxrate, taxruleid, taxvalue, feetype, internaltype = k
+            positionid, itemid, variationid, subeventid, price, taxrate, taxruleid, taxvalue, feetype, internaltype, taxcode = k
            d = target_transaction_count[k] - current_transaction_count[k]
            if d:
                create.append(Transaction(
@@ -1272,6 +1273,7 @@ class Order(LockModel, LoggedModel):
                    tax_rate=taxrate,
                    tax_rule_id=taxruleid,
                    tax_value=taxvalue,
+                    tax_code=taxcode,
                    fee_type=feetype,
                    internal_type=internaltype,
                ))
@@ -2275,6 +2277,7 @@ class OrderFee(models.Model):
    FEE_TYPE_SERVICE = "service"
    FEE_TYPE_CANCELLATION = "cancellation"
    FEE_TYPE_INSURANCE = "insurance"
+    FEE_TYPE_LATE = "late"
    FEE_TYPE_OTHER = "other"
    FEE_TYPE_GIFTCARD = "giftcard"
    FEE_TYPES = (
@@ -2283,6 +2286,7 @@ class OrderFee(models.Model):
        (FEE_TYPE_SERVICE, _("Service fee")),
        (FEE_TYPE_CANCELLATION, _("Cancellation fee")),
        (FEE_TYPE_INSURANCE, _("Insurance fee")),
+        (FEE_TYPE_LATE, _("Late fee")),
        (FEE_TYPE_OTHER, _("Other fees")),
        (FEE_TYPE_GIFTCARD, _("Gift card")),
    )
@@ -2311,6 +2315,10 @@ class OrderFee(models.Model):
        on_delete=models.PROTECT,
        null=True, blank=True
    )
+    tax_code = models.CharField(
+        max_length=190,
+        null=True, blank=True,
+    )
    tax_value = models.DecimalField(
        max_digits=13, decimal_places=2,
        verbose_name=_('Tax value')
@@ -2338,6 +2346,16 @@ class OrderFee(models.Model):
            self._transaction_key_reset()
        return super().refresh_from_db(using, fields)

+    def get_tax_code_display(self):
+        from pretix.base.models.tax import get_tax_code_labels
+
+        if self.tax_code:
+            choices_dict = get_tax_code_labels()
+            return force_str(
+                choices_dict.get(make_hashable(self.tax_code), self.tax_code), strings_only=True
+            )
+        return ""
+
    def _transaction_key_reset(self):
        self.__initial_transaction_key = Transaction.key(self)
        self.__initial_canceled = self.canceled
@@ -2368,9 +2386,11 @@ class OrderFee(models.Model):
        if self.tax_rule:
            tax = self.tax_rule.tax(self.value, base_price_is='gross', invoice_address=ia, force_fixed_gross_price=True)
            self.tax_rate = tax.rate
+            self.tax_code = tax.code
            self.tax_value = tax.tax
        else:
            self.tax_value = Decimal('0.00')
+            self.tax_code = None
            self.tax_rate = Decimal('0.00')

    def save(self, *args, **kwargs):
@@ -2379,6 +2399,7 @@ class OrderFee(models.Model):

        if self.tax_rate is None:
            self._calculate_tax()
+
        self.order.touch()

        if not self.get_deferred_fields():
@@ -2466,6 +2487,10 @@ class OrderPosition(AbstractPosition):
        on_delete=models.PROTECT,
        null=True, blank=True
    )
+    tax_code = models.CharField(
+        max_length=190,
+        null=True, blank=True,
+    )
    tax_value = models.DecimalField(
        max_digits=13, decimal_places=2,
        verbose_name=_('Tax value')
@@ -2523,6 +2548,16 @@ class OrderPosition(AbstractPosition):
            models.UniqueConstraint("organizer", "secret", name="orderposition_organizer_secret_uniq")
        ]

+    def get_tax_code_display(self):
+        from pretix.base.models.tax import get_tax_code_labels
+
+        if self.tax_code:
+            choices_dict = get_tax_code_labels()
+            return force_str(
+                choices_dict.get(make_hashable(self.tax_code), self.tax_code), strings_only=True
+            )
+        return ""
+
    @cached_property
    def sort_key(self):
        return self.addon_to.positionid if self.addon_to else self.positionid, self.addon_to_id or 0, self.positionid
@@ -2695,11 +2730,13 @@ class OrderPosition(AbstractPosition):
        if self.tax_rule:
            tax = self.tax_rule.tax(self.price, invoice_address=ia, base_price_is='gross', force_fixed_gross_price=True)
            self.tax_rate = tax.rate
+            self.tax_code = tax.code
            self.tax_value = tax.tax
            if tax.gross != self.price:
                raise ValueError('Invalid tax calculation')
        else:
            self.tax_value = Decimal('0.00')
+            self.tax_code = None
            self.tax_rate = Decimal('0.00')

    def save(self, *args, **kwargs):
@@ -2970,6 +3007,10 @@ class Transaction(models.Model):
        on_delete=models.PROTECT,
        null=True, blank=True
    )
+    tax_code = models.CharField(
+        max_length=190,
+        null=True, blank=True,
+    )
    tax_value = models.DecimalField(
        max_digits=13, decimal_places=2,
        verbose_name=_('Tax value')
@@ -2990,17 +3031,27 @@ class Transaction(models.Model):
            raise ValidationError('Should set either item or fee type')
        return super().save(*args, **kwargs)

+    def get_tax_code_display(self):
+        from pretix.base.models.tax import get_tax_code_labels
+
+        if self.tax_code:
+            choices_dict = get_tax_code_labels()
+            return force_str(
+                choices_dict.get(make_hashable(self.tax_code), self.tax_code), strings_only=True
+            )
+        return ""
+
    @staticmethod
    def key(obj):
        if isinstance(obj, Transaction):
            return (obj.positionid, obj.item_id, obj.variation_id, obj.subevent_id, obj.price, obj.tax_rate,
-                    obj.tax_rule_id, obj.tax_value, obj.fee_type, obj.internal_type)
+                    obj.tax_rule_id, obj.tax_value, obj.fee_type, obj.internal_type, obj.tax_code)
        elif isinstance(obj, OrderPosition):
            return (obj.positionid, obj.item_id, obj.variation_id, obj.subevent_id, obj.price, obj.tax_rate,
-                    obj.tax_rule_id, obj.tax_value, None, None)
+                    obj.tax_rule_id, obj.tax_value, None, None, obj.tax_code)
        elif isinstance(obj, OrderFee):
            return (None, None, None, None, obj.value, obj.tax_rate,
-                    obj.tax_rule_id, obj.tax_value, obj.fee_type, obj.internal_type)
+                    obj.tax_rule_id, obj.tax_value, obj.fee_type, obj.internal_type, obj.tax_code)
        raise ValueError('invalid state')  # noqa

    @property
@@ -3164,6 +3215,7 @@ class CartPosition(AbstractPosition):
        if line_price.gross != self.line_price_gross or line_price.rate != self.tax_rate:
            self.line_price_gross = line_price.gross
            self.tax_rate = line_price.rate
+            self.tax_code = line_price.code
            self.save(update_fields=['line_price_gross', 'tax_rate'])

    @property
@@ -3204,9 +3256,9 @@ class InvoiceAddress(models.Model):
    company = models.CharField(max_length=255, blank=True, verbose_name=_('Company name'))
    name_cached = models.CharField(max_length=255, verbose_name=_('Full name'), blank=True)
    name_parts = models.JSONField(default=dict)
-    street = models.TextField(verbose_name=_('Address'), blank=False)
-    zipcode = models.CharField(max_length=30, verbose_name=_('ZIP code'), blank=False)
-    city = models.CharField(max_length=255, verbose_name=_('City'), blank=False)
+    street = models.TextField(verbose_name=_('Address'), blank=True)
+    zipcode = models.CharField(max_length=30, verbose_name=_('ZIP code'), blank=True)
+    city = models.CharField(max_length=255, verbose_name=_('City'), blank=True)
    country_old = models.CharField(max_length=255, verbose_name=_('Country'), blank=False)
    country = FastCountryField(verbose_name=_('Country'), blank=False, blank_label=_('Select country'),
                               countries=CachedCountries)
@@ -21,6 +21,7 @@
 #
 import json
 from decimal import Decimal
+from typing import Optional

 import jsonschema
 from django.contrib.staticfiles import finders
@@ -30,8 +31,9 @@ from django.db import models
 from django.utils.deconstruct import deconstructible
 from django.utils.formats import localize
 from django.utils.functional import lazy
+from django.utils.hashable import make_hashable
 from django.utils.html import format_html
-from django.utils.translation import gettext_lazy as _, pgettext
+from django.utils.translation import gettext_lazy as _, pgettext, pgettext_lazy
 from i18nfield.fields import I18nCharField
 from i18nfield.strings import LazyI18nString

@@ -42,7 +44,7 @@ from pretix.helpers.countries import FastCountryField


 class TaxedPrice:
-    def __init__(self, *, gross: Decimal, net: Decimal, tax: Decimal, rate: Decimal, name: str):
+    def __init__(self, *, gross: Decimal, net: Decimal, tax: Decimal, rate: Decimal, name: str, code: Optional[str]):
        if net + tax != gross:
            raise ValueError('Net value and tax value need to add to the gross value')
        self.gross = gross
@@ -50,6 +52,7 @@ class TaxedPrice:
        self.tax = tax
        self.rate = rate
        self.name = name
+        self.code = code

    def __repr__(self):
        return '{} + {}% = {}'.format(localize(self.net), localize(self.rate), localize(self.gross))
@@ -72,6 +75,7 @@ class TaxedPrice:
            tax=newgross - newnet,
            rate=self.rate,
            name=self.name,
+            code=self.code,
        )

    def __mul__(self, other):
@@ -85,6 +89,7 @@ class TaxedPrice:
            tax=newgross - newnet,
            rate=self.rate,
            name=self.name,
+            code=self.code,
        )

    def __eq__(self, other):
@@ -93,7 +98,8 @@ class TaxedPrice:
            self.net == other.net and
            self.tax == other.tax and
            self.rate == other.rate and
-            self.name == other.name
+            self.name == other.name and
+            self.code == other.code
        )


@@ -102,7 +108,8 @@ TAXED_ZERO = TaxedPrice(
    net=Decimal('0.00'),
    tax=Decimal('0.00'),
    rate=Decimal('0.00'),
-    name=''
+    name='',
+    code=None,
 )

 EU_COUNTRIES = {
@@ -125,6 +132,152 @@ VAT_ID_COUNTRIES = EU_COUNTRIES | {'CH', 'NO'}
 format_html_lazy = lazy(format_html, str)


+TAX_CODE_LISTS = (
+    # Sources:
+    # https://ec.europa.eu/digital-building-blocks/sites/display/DIGITAL/Registry+of+supporting+artefacts+to+implement+EN16931#RegistryofsupportingartefactstoimplementEN16931-Codelists#RegistryofsupportingartefactstoimplementEN16931-Codelists
+    # https://docs.peppol.eu/poacc/billing/3.0/codelist/vatex/
+    # https://docs.peppol.eu/poacc/billing/3.0/codelist/UNCL5305/
+    # https://www.bzst.de/DE/Unternehmen/Aussenpruefungen/DigitaleSchnittstelleFinV/digitaleschnittstellefinv_node.html#js-toc-entry2
+    #
+    # !! When changed, also update tax-rules-custom.schema.json and doc/api/resources/taxrules.rst !!
+    (
+        _("Standard rates"),
+        (
+            # Standard rate in any country, such as 19% in Germany or 20% in Austria
+            # DSFinV-K mapping: 1
+            ("S/standard", pgettext_lazy("tax_code", "Standard rate")),
+
+            # Reduced rate in any country, such as 7% in Germany or both 10% and 13% in Austria
+            # DSFinV-K mapping: 2
+            ("S/reduced", pgettext_lazy("tax_code", "Reduced rate")),
+
+            # Averaged rate, for example Germany § 24 (1) Nr. 3 UStG "für die übrigen Umsätze" in agricultural and silvicultural businesses
+            # DSFinV-K mapping: 3
+            ("S/averaged", pgettext_lazy("tax_code", "Averaged rate (other revenue in a agricultural and silvicultural business)")),
+
+            # We ignore the German special case of the actual silvicultural products as they won't be sold through pretix (DSFinV-K mapping: 4)
+        )
+    ),
+    (
+        _("Reverse charge"),
+        (
+            ("AE", pgettext_lazy("tax_code", "Reverse charge")),
+        )
+    ),
+    (
+        _("Tax free"),
+        (
+            # DSFinV-K mapping: 5
+            ("O", pgettext_lazy("tax_code", "Services outside of scope of tax")),
+
+            # DSFinV-K mapping: 6
+            ("E", pgettext_lazy("tax_code", "Exempt from tax (no reason given)")),
+
+            # DSFinV-K mapping: 6
+            ("Z", pgettext_lazy("tax_code", "Zero-rated goods")),
+
+            # DSFinV-K mapping: 5
+            ("G", pgettext_lazy("tax_code", "Free export item, VAT not charged")),
+
+            # DSFinV-K mapping: 6?
+            ("K", pgettext_lazy("tax_code", "VAT exempt for EEA intra-community supply of goods and services")),
+        )
+    ),
+    (
+        _("Special cases"),
+        (
+            ("L", pgettext_lazy("tax_code", "Canary Islands general indirect tax")),
+            ("M", pgettext_lazy("tax_code", "Tax for production, services and importation in Ceuta and Melilla")),
+            ("B", pgettext_lazy("tax_code", "Transferred (VAT), only in Italy")),
+        )
+    ),
+    (
+        _("Exempt with specific reason"),
+        (
+            ("E/VATEX-EU-79-C",
+             pgettext_lazy("tax_code", "Exempt based on article 79, point c of Council Directive 2006/112/EC")),
+            *[
+                (
+                    f"E/VATEX-EU-132-1{letter.upper()}",
+                    lazy(
+                        lambda let: pgettext(
+                            "tax_code",
+                            "Exempt based on article {article}, section {section} ({letter}) of Council "
+                            "Directive 2006/112/EC"
+                        ).format(article="132", section="1", letter=let),
+                        str
+                    )(letter)
+                ) for letter in ("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q")
+            ],
+            *[
+                (
+                    f"E/VATEX-EU-143-1{letter.upper()}",
+                    lazy(
+                        lambda let: pgettext(
+                            "tax_code",
+                            "Exempt based on article {article}, section {section} ({letter}) of Council "
+                            "Directive 2006/112/EC"
+                        ).format(article="143", section="1", letter=let),
+                        str
+                    )(letter)
+                ) for letter in ("a", "b", "c", "d", "e", "f", "fa", "g", "h", "i", "j", "k", "l")
+            ],
+            *[
+                (
+                    f"E/VATEX-EU-148-{letter.upper()}",
+                    lazy(
+                        lambda let: pgettext(
+                            "tax_code",
+                            "Exempt based on article {article}, section ({letter}) of Council "
+                            "Directive 2006/112/EC"
+                        ).format(article="148", letter=let),
+                        str
+                    )(letter)
+                ) for letter in ("a", "b", "c", "d", "e", "f", "g")
+            ],
+            *[
+                (
+                    f"E/VATEX-EU-151-1{letter.upper()}",
+                    lazy(
+                        lambda let: pgettext(
+                            "tax_code",
+                            "Exempt based on article {article}, section {section} ({letter}) of Council "
+                            "Directive 2006/112/EC"
+                        ).format(article="151", section="1", letter=let),
+                        str
+                    )(letter)
+                ) for letter in ("a", "aa", "b", "c", "d", "e")
+            ],
+            ("E/VATEX-EU-309",
+             pgettext_lazy("tax_code", "Exempt based on article 309 of Council Directive 2006/112/EC")),
+            ("E/VATEX-EU-D",
+             pgettext_lazy("tax_code", "Intra-Community acquisition from second hand means of transport")),
+            ("E/VATEX-EU-F",
+             pgettext_lazy("tax_code", "Intra-Community acquisition of second hand goods")),
+            ("E/VATEX-EU-I",
+             pgettext_lazy("tax_code", "Intra-Community acquisition of works of art")),
+            ("E/VATEX-EU-J",
+             pgettext_lazy("tax_code", "Intra-Community acquisition of collectors items and antiques")),
+            ("E/VATEX-FR-FRANCHISE",
+             pgettext_lazy("tax_code", "France domestic VAT franchise in base")),
+            ("E/VATEX-FR-CNWVAT",
+             pgettext_lazy("tax_code", "France domestic Credit Notes without VAT, due to supplier forfeit of VAT for discount")),
+        )
+    ),
+)
+
+
+def get_tax_code_labels():
+    flat = []
+    for choice, value in TAX_CODE_LISTS:
+        if isinstance(value, (list, tuple)):
+            flat.extend(value)
+        else:
+            flat.append((choice, value))
+
+    return dict(make_hashable(flat))
+
+
 def is_eu_country(cc):
    cc = str(cc)
    return cc in EU_COUNTRIES
@@ -173,6 +326,14 @@ class TaxRule(LoggedModel):
        help_text=_('Should be short, e.g. "VAT"'),
        max_length=190,
    )
+    code = models.CharField(
+        verbose_name=_('Tax code'),
+        help_text=_('If you help us understand what this tax rules legally is, we can use this information for '
+                    'eInvoices, exporting to accounting system, etc.'),
+        null=True, blank=True,
+        max_length=190,
+        choices=TAX_CODE_LISTS,
+    )
    rate = models.DecimalField(
        max_digits=10,
        decimal_places=2,
@@ -250,6 +411,16 @@ class TaxRule(LoggedModel):
        if self.eu_reverse_charge and not self.home_country:
            raise ValidationError(_('You need to set your home country to use the reverse charge feature.'))

+        if self.rate != Decimal("0.00") and self.code and (self.code.split("/")[0] in ("O", "E", "Z", "G", "K", "AE")):
+            raise ValidationError({
+                "code": _("A combination of this tax code with a non-zero tax rate does not make sense.")
+            })
+
+        if self.rate == Decimal("0.00") and self.code and (self.code.split("/")[0] in ("S", "L", "M", "B")):
+            raise ValidationError({
+                "code": _("A combination of this tax code with a zero tax rate does not make sense.")
+            })
+
    def __str__(self):
        if self.price_includes_tax:
            s = _('incl. {rate}% {name}').format(rate=self.rate, name=self.name)
@@ -276,8 +447,9 @@ class TaxRule(LoggedModel):
                return Decimal(rule.get('rate'))
        return Decimal(self.rate)

-    def tax(self, base_price, base_price_is='auto', currency=None, override_tax_rate=None, invoice_address=None,
-            subtract_from_gross=Decimal('0.00'), gross_price_is_tax_rate: Decimal = None, force_fixed_gross_price=False):
+    def tax(self, base_price, base_price_is='auto', currency=None, override_tax_rate=None, override_tax_code=None,
+            invoice_address=None, subtract_from_gross=Decimal('0.00'), gross_price_is_tax_rate: Decimal = None,
+            force_fixed_gross_price=False):
        from .event import Event
        try:
            currency = currency or self.event.currency
@@ -285,6 +457,13 @@ class TaxRule(LoggedModel):
            pass

        rate = Decimal(self.rate)
+        code = self.code
+
+        if override_tax_code is not None:
+            code = override_tax_code
+        elif invoice_address:
+            code = self.tax_code_for(invoice_address)
+
        if override_tax_rate is not None:
            rate = override_tax_rate
        elif invoice_address:
@@ -317,11 +496,8 @@ class TaxRule(LoggedModel):
        if rate == Decimal('0.00'):
            gross = _limit_subtract(base_price, subtract_from_gross)
            return TaxedPrice(
-                net=gross,
-                gross=gross,
-                tax=Decimal('0.00'),
-                rate=rate,
-                name=self.name,
+                net=gross, gross=gross, tax=Decimal('0.00'),
+                rate=rate, name=self.name, code=code,
            )

        if base_price_is == 'auto':
@@ -346,7 +522,7 @@ class TaxRule(LoggedModel):

        return TaxedPrice(
            net=net, gross=gross, tax=gross - net,
-            rate=rate, name=self.name
+            rate=rate, name=self.name, code=code,
        )

    @property
@@ -427,6 +603,38 @@ class TaxRule(LoggedModel):
                return True
        return False

+    def tax_code_for(self, invoice_address):
+        if self._custom_rules:
+            rule = self.get_matching_rule(invoice_address)
+            if rule.get("code"):
+                return rule["code"]
+            if rule.get("action", "vat") == "reverse":
+                return "AE"
+            return self.code
+
+        if not self.eu_reverse_charge:
+            # No reverse charge rules? Always apply VAT!
+            return self.code
+
+        if not invoice_address or not invoice_address.country:
+            # No country specified? Always apply VAT!
+            return self.code
+
+        if not is_eu_country(invoice_address.country):
+            # Non-EU country? "Non-taxable" since not in scope
+            return "O"
+
+        if invoice_address.country == self.home_country:
+            # Within same EU country? Always apply VAT!
+            return self.code
+
+        if invoice_address.is_business and invoice_address.vat_id and invoice_address.vat_id_validated:
+            # Reverse charge case
+            return "AE"
+
+        # Consumer in different EU country / invalid VAT
+        return self.code
+
    def _tax_applicable(self, invoice_address):
        if self._custom_rules:
            rule = self.get_matching_rule(invoice_address)
@@ -73,7 +73,7 @@ class WaitingListEntry(LoggedModel):
        blank=True, default=dict
    )
    email = models.EmailField(
-        verbose_name=_("E-mail address")
+        verbose_name=_("Email address")
    )
    phone = PhoneNumberField(
        null=True, blank=True,
@@ -1419,50 +1419,51 @@ class GiftCardPayment(BasePaymentProvider):
    def payment_refund_supported(self, payment: OrderPayment) -> bool:
        return True

-    def checkout_prepare(self, request: HttpRequest, cart: Dict[str, Any]) -> Union[bool, str, None]:
-        from pretix.base.services.cart import add_payment_to_cart
+    def _add_giftcard_to_cart(self, cs, gc):
+        from pretix.base.services.cart import add_payment_to_cart_session

+        if gc.currency != self.event.currency:
+            raise ValidationError(_("This gift card does not support this currency."))
+        if gc.testmode and not self.event.testmode:
+            raise ValidationError(_("This gift card can only be used in test mode."))
+        if not gc.testmode and self.event.testmode:
+            raise ValidationError(_("Only test gift cards can be used in test mode."))
+        if gc.expires and gc.expires < time_machine_now():
+            raise ValidationError(_("This gift card is no longer valid."))
+        if gc.value <= Decimal("0.00"):
+            raise ValidationError(_("All credit on this gift card has been used."))
+
+        for p in cs.get('payments', []):
+            if p['provider'] == self.identifier and p['info_data']['gift_card'] == gc.pk:
+                raise ValidationError(_("This gift card is already used for your payment."))
+
+        add_payment_to_cart_session(
+            cs,
+            self,
+            max_value=gc.value,
+            info_data={
+                'gift_card': gc.pk,
+                'gift_card_secret': gc.secret,
+            }
+        )
+
+    def checkout_prepare(self, request: HttpRequest, cart: Dict[str, Any]) -> Union[bool, str, None]:
        for p in get_cart(request):
            if p.item.issue_giftcard:
                messages.error(request, _("You cannot pay with gift cards when buying a gift card."))
                return

-        cs = cart_session(request)
        try:
            gc = self.event.organizer.accepted_gift_cards.get(
                secret=request.POST.get("giftcard").strip()
            )
-            if gc.currency != self.event.currency:
-                messages.error(request, _("This gift card does not support this currency."))
+            cs = cart_session(request)
+            try:
+                self._add_giftcard_to_cart(cs, gc)
+                return True
+            except ValidationError as e:
+                messages.error(request, str(e.message))
                return
-            if gc.testmode and not self.event.testmode:
-                messages.error(request, _("This gift card can only be used in test mode."))
-                return
-            if not gc.testmode and self.event.testmode:
-                messages.error(request, _("Only test gift cards can be used in test mode."))
-                return
-            if gc.expires and gc.expires < time_machine_now():
-                messages.error(request, _("This gift card is no longer valid."))
-                return
-            if gc.value <= Decimal("0.00"):
-                messages.error(request, _("All credit on this gift card has been used."))
-                return
-
-            for p in cs.get('payments', []):
-                if p['provider'] == self.identifier and p['info_data']['gift_card'] == gc.pk:
-                    messages.error(request, _("This gift card is already used for your payment."))
-                    return
-
-            add_payment_to_cart(
-                request,
-                self,
-                max_value=gc.value,
-                info_data={
-                    'gift_card': gc.pk,
-                    'gift_card_secret': gc.secret,
-                }
-            )
-            return True
        except GiftCard.DoesNotExist:
            if self.event.vouchers.filter(code__iexact=request.POST.get("giftcard")).exists():
                messages.warning(request, _("You entered a voucher instead of a gift card. Vouchers can only be entered on the first page of the shop below "
@@ -1426,6 +1426,28 @@ class CartManager:
            raise CartError(err)


+def add_payment_to_cart_session(cart_session, provider, min_value: Decimal=None, max_value: Decimal=None, info_data: dict=None):
+    """
+    :param cart_session: The current cart session.
+    :param provider: The instance of your payment provider.
+    :param min_value: The minimum value this payment instrument supports, or ``None`` for unlimited.
+    :param max_value: The maximum value this payment instrument supports, or ``None`` for unlimited. Highly discouraged
+                      to use for payment providers which charge a payment fee, as this can be very user-unfriendly if
+                      users need a second payment method just for the payment fee of the first method.
+    :param info_data: A dictionary of information that will be passed through to the ``OrderPayment.info_data`` attribute.
+    :return:
+    """
+    cart_session.setdefault('payments', [])
+    cart_session['payments'].append({
+        'id': str(uuid.uuid4()),
+        'provider': provider.identifier,
+        'multi_use_supported': provider.multi_use_supported,
+        'min_value': str(min_value) if min_value is not None else None,
+        'max_value': str(max_value) if max_value is not None else None,
+        'info_data': info_data or {},
+    })
+
+
 def add_payment_to_cart(request, provider, min_value: Decimal=None, max_value: Decimal=None, info_data: dict=None):
    """
    :param request: The current HTTP request context.
@@ -1440,16 +1462,7 @@ def add_payment_to_cart(request, provider, min_value: Decimal=None, max_value: D
    from pretix.presale.views.cart import cart_session

    cs = cart_session(request)
-    cs.setdefault('payments', [])
-
-    cs['payments'].append({
-        'id': str(uuid.uuid4()),
-        'provider': provider.identifier,
-        'multi_use_supported': provider.multi_use_supported,
-        'min_value': str(min_value) if min_value is not None else None,
-        'max_value': str(max_value) if max_value is not None else None,
-        'info_data': info_data or {},
-    })
+    add_payment_to_cart_session(cs, provider, min_value, max_value, info_data)


 def get_fees(event, request, total, invoice_address, payments, positions):
@@ -1500,6 +1513,7 @@ def get_fees(event, request, total, invoice_address, payments, positions):
                    value=payment_fee,
                    tax_rate=payment_fee_tax.rate,
                    tax_value=payment_fee_tax.tax,
+                    tax_code=payment_fee_tax.code,
                    tax_rule=payment_fee_tax_rule
                ))

@@ -271,7 +271,9 @@ def build_invoice(invoice: Invoice) -> Invoice:
                event_date_from=p.subevent.date_from if invoice.event.has_subevents else invoice.event.date_from,
                event_date_to=p.subevent.date_to if invoice.event.has_subevents else invoice.event.date_to,
                event_location=location if invoice.event.settings.invoice_event_location else None,
-                tax_rate=p.tax_rate, tax_name=p.tax_rule.name if p.tax_rule else ''
+                tax_rate=p.tax_rate,
+                tax_code=p.tax_code,
+                tax_name=p.tax_rule.name if p.tax_rule else ''
            )

            if p.tax_rule and p.tax_rule.is_reverse_charge(ia) and p.price and not p.tax_value:
@@ -305,6 +307,7 @@ def build_invoice(invoice: Invoice) -> Invoice:
                ),
                tax_value=fee.tax_value,
                tax_rate=fee.tax_rate,
+                tax_code=fee.tax_code,
                tax_name=fee.tax_rule.name if fee.tax_rule else '',
                fee_type=fee.fee_type,
                fee_internal_type=fee.internal_type or None,
@@ -491,13 +494,13 @@ def build_preview_invoice_pdf(event):
                    InvoiceLine.objects.create(
                        invoice=invoice, description=_("Sample product {}").format(i + 1),
                        gross_value=tax.gross, tax_value=tax.tax,
-                        tax_rate=tax.rate, tax_name=tax.name
+                        tax_rate=tax.rate, tax_name=tax.name, tax_code=tax.code,
                    )
        else:
            for i in range(5):
                InvoiceLine.objects.create(
                    invoice=invoice, description=_("Sample product A"),
-                    gross_value=100, tax_value=0, tax_rate=0
+                    gross_value=100, tax_value=0, tax_rate=0, tax_code=None,
                )

        return event.invoice_renderer.generate(invoice)
@@ -76,7 +76,7 @@ from pretix.base.services.tasks import TransactionAwareTask
 from pretix.base.services.tickets import get_tickets_for_order
 from pretix.base.signals import email_filter, global_email_filter
 from pretix.celery_app import app
-from pretix.helpers.format import format_map
+from pretix.helpers.format import SafeFormatter, format_map
 from pretix.helpers.hierarkey import clean_filename
 from pretix.multidomain.urlreverse import build_absolute_uri
 from pretix.presale.ical import get_private_icals
@@ -311,11 +311,17 @@ def mail(email: Union[str, Sequence[str]], subject: str, template: Union[str, La
            try:
                if plain_text_only:
                    body_html = None
+                elif 'context' in inspect.signature(renderer.render).parameters:
+                    body_html = renderer.render(content_plain, signature, raw_subject, order, position, context)
                elif 'position' in inspect.signature(renderer.render).parameters:
+                    # Backwards compatibility
+                    warnings.warn('Email renderer called without context argument because context argument is not '
+                                  'supported.',
+                                  DeprecationWarning)
                    body_html = renderer.render(content_plain, signature, raw_subject, order, position)
                else:
                    # Backwards compatibility
-                    warnings.warn('E-mail renderer called without position argument because position argument is not '
+                    warnings.warn('Email renderer called without position argument because position argument is not '
                                  'supported.',
                                  DeprecationWarning)
                    body_html = renderer.render(content_plain, signature, raw_subject, order)
@@ -323,6 +329,8 @@ def mail(email: Union[str, Sequence[str]], subject: str, template: Union[str, La
                logger.exception('Could not render HTML body')
                body_html = None

+        body_plain = format_map(body_plain, context, mode=SafeFormatter.MODE_RICH_TO_PLAIN)
+
        send_task = mail_send_task.si(
            to=[email] if isinstance(email, str) else list(email),
            cc=cc,
@@ -655,7 +663,7 @@ def render_mail(template, context):
    if isinstance(template, LazyI18nString):
        body = str(template)
        if context:
-            body = format_map(body, context)
+            body = format_map(body, context, mode=SafeFormatter.MODE_IGNORE_RICH)
    else:
        tpl = get_template(template)
        body = tpl.render(context)
@@ -118,7 +118,7 @@ def import_orders(event: Event, fileid: str, settings: dict, locale: str, user,
                    c.assign(record.get(c.identifier), order, position, order._address)

                if position.seat is not None:
-                    lock_seats.append(position.seat)
+                    lock_seats.append((order.sales_channel, position.seat))
            except (ValidationError, ImportError) as e:
                raise DataImportError(
                    _('Invalid data in row {row}: {message}').format(row=i, message=str(e))
@@ -128,9 +128,9 @@ def import_orders(event: Event, fileid: str, settings: dict, locale: str, user,
            with transaction.atomic():
                # We don't support vouchers, quotas, or memberships here, so we only need to lock if seats are in use
                if lock_seats:
-                    lock_objects(lock_seats, shared_lock_objects=[event])
-                    for s in lock_seats:
-                        if not s.is_available():
+                    lock_objects([s for c, s in lock_seats], shared_lock_objects=[event])
+                    for c, s in lock_seats:
+                        if not s.is_available(sales_channel=c):
                            raise DataImportError(_('The seat you selected has already been taken. Please select a different seat.'))

                save_transactions = []
@@ -1721,16 +1721,17 @@ class OrderChangeManager:

            try:
                new_rate = tax_rule.tax_rate_for(ia)
+                new_code = tax_rule.tax_code_for(ia)
            except TaxRule.SaleNotAllowed:
                raise OrderError(error_messages['tax_rule_country_blocked'])
            # We use override_tax_rate to make sure .tax() doesn't get clever and re-adjusts the pricing itself
-            if new_rate != pos.tax_rate:
+            if new_rate != pos.tax_rate or new_code != pos.tax_code:
                if keep == 'net':
                    new_tax = tax_rule.tax(pos.price - pos.tax_value, base_price_is='net', currency=self.event.currency,
-                                           override_tax_rate=new_rate)
+                                           override_tax_rate=new_rate, override_tax_code=new_code)
                else:
                    new_tax = tax_rule.tax(pos.price, base_price_is='gross', currency=self.event.currency,
-                                           override_tax_rate=new_rate)
+                                           override_tax_rate=new_rate, override_tax_code=new_code)
                self._totaldiff += new_tax.gross - pos.price
                self._operations.append(self.PriceOperation(pos, new_tax, new_tax.gross - pos.price))
                self._invoice_dirty = True
@@ -2304,6 +2305,7 @@ class OrderChangeManager:
                op.position.price = op.price.gross
                op.position.tax_rate = op.price.rate
                op.position.tax_value = op.price.tax
+                op.position.tax_code = op.price.code
                op.position.save()
            elif isinstance(op, self.TaxRuleOperation):
                if isinstance(op.position, OrderPosition):
@@ -2400,7 +2402,7 @@ class OrderChangeManager:
            elif isinstance(op, self.AddOperation):
                pos = OrderPosition.objects.create(
                    item=op.item, variation=op.variation, addon_to=op.addon_to,
-                    price=op.price.gross, order=self.order, tax_rate=op.price.rate,
+                    price=op.price.gross, order=self.order, tax_rate=op.price.rate, tax_code=op.price.code,
                    tax_value=op.price.tax, tax_rule=op.item.tax_rule,
                    positionid=nextposid, subevent=op.subevent, seat=op.seat,
                    used_membership=op.membership, valid_from=op.valid_from, valid_until=op.valid_until,
@@ -26,6 +26,7 @@ from decimal import Decimal

 from django.dispatch import receiver
 from django.utils.formats import date_format
+from django.utils.html import escape
 from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _

@@ -39,7 +40,8 @@ from pretix.base.settings import PERSON_NAME_SCHEMES, get_name_parts_localized
 from pretix.base.signals import (
    register_mail_placeholders, register_text_placeholders,
 )
-from pretix.helpers.format import SafeFormatter
+from pretix.base.templatetags.rich_text import markdown_compile_email
+from pretix.helpers.format import PlainHtmlAlternativeString, SafeFormatter

 logger = logging.getLogger('pretix.base.services.placeholders')

@@ -107,6 +109,91 @@ class SimpleFunctionalTextPlaceholder(BaseTextPlaceholder):
            return self._sample


+class BaseRichTextPlaceholder(BaseTextPlaceholder):
+    """
+    This is the base class for all placeholders which can render either to plain text
+    or to a rich HTML element.
+    """
+
+    def __init__(self, identifier, args):
+        self._identifier = identifier
+        self._args = args
+
+    @property
+    def identifier(self):
+        return self._identifier
+
+    @property
+    def required_context(self):
+        return self._args
+
+    @property
+    def is_block(self):
+        return False
+
+    def render(self, context):
+        return PlainHtmlAlternativeString(
+            self.render_plain(**{k: context[k] for k in self._args}),
+            self.render_html(**{k: context[k] for k in self._args}),
+            self.is_block,
+        )
+
+    def render_html(self, **kwargs):
+        """
+        HTML rendering of the placeholder. Should return "safe" HTML, i.e. everything needs to be
+        escaped.
+        """
+        raise NotImplementedError
+
+    def render_plain(self, **kwargs):
+        """
+        Plain text rendering of the placeholder.
+        """
+        raise NotImplementedError
+
+    def render_sample(self, event):
+        return PlainHtmlAlternativeString(
+            self.render_sample_plain(event=event),
+            self.render_sample_html(event=event),
+            self.is_block,
+        )
+
+    def render_sample_html(self, event):
+        raise NotImplementedError
+
+    def render_sample_plain(self, event):
+        raise NotImplementedError
+
+
+class SimpleButtonPlaceholder(BaseRichTextPlaceholder):
+    def __init__(self, identifier, args, url_func, text_func, sample_url_func, sample_text_func):
+        super().__init__(identifier, args)
+        self._url_func = url_func
+        self._text_func = text_func
+        self._sample_url_func = sample_url_func
+        self._sample_text_func = sample_text_func
+
+    def render_html(self, **context):
+        text = self._text_func(**{k: context[k] for k in self._args})
+        url = self._url_func(**{k: context[k] for k in self._args})
+        return f'<a href="{url}" class="button">{escape(text)}</a>'
+
+    def render_plain(self, **context):
+        text = self._text_func(**{k: context[k] for k in self._args})
+        url = self._url_func(**{k: context[k] for k in self._args})
+        return f'{text}: {url}'
+
+    def render_sample_html(self, event):
+        text = self._sample_text_func(event)
+        url = self._sample_url_func(event)
+        return f'<a href="{url}" class="button">{escape(text)}</a>'
+
+    def render_sample_plain(self, event):
+        text = self._sample_text_func(event)
+        url = self._sample_url_func(event)
+        return f'{text}: {url}'
+
+
 class PlaceholderContext(SafeFormatter):
    """
    Holds the contextual arguments and corresponding list of available placeholders for formatting
@@ -209,13 +296,24 @@ def get_best_name(position_or_address, parts=False):
 def base_placeholders(sender, **kwargs):
    from pretix.multidomain.urlreverse import build_absolute_uri

+    def _event_sample(event):
+        if event.has_subevents:
+            se = event.subevents.first()
+            if se:
+                return se.name
+        return event.name
+
    ph = [
        SimpleFunctionalTextPlaceholder(
            'event', ['event'], lambda event: event.name, lambda event: event.name
        ),
        SimpleFunctionalTextPlaceholder(
            'event', ['event_or_subevent'], lambda event_or_subevent: event_or_subevent.name,
-            lambda event_or_subevent: event_or_subevent.name
+            _event_sample,
+        ),
+        SimpleFunctionalTextPlaceholder(
+            'event_series_name', ['event', 'event_or_subevent'], lambda event, event_or_subevent: event.name,
+            lambda event: event.name
        ),
        SimpleFunctionalTextPlaceholder(
            'event_slug', ['event'], lambda event: event.slug, lambda event: event.slug
@@ -273,6 +371,27 @@ def base_placeholders(sender, **kwargs):
                }
            ),
        ),
+        SimpleButtonPlaceholder(
+            'url_button', ['order', 'event'],
+            url_func=lambda order, event: build_absolute_uri(
+                event,
+                'presale:event.order.open', kwargs={
+                    'order': order.code,
+                    'secret': order.secret,
+                    'hash': order.email_confirm_secret()
+                }
+            ),
+            text_func=lambda order, event: _("View order details"),
+            sample_url_func=lambda event: build_absolute_uri(
+                event,
+                'presale:event.order.open', kwargs={
+                    'order': 'F8VVL',
+                    'secret': '6zzjnumtsx136ddy',
+                    'hash': '98kusd8ofsj8dnkd'
+                }
+            ),
+            sample_text_func=lambda event: _("View order details"),
+        ),
        SimpleFunctionalTextPlaceholder(
            'url_info_change', ['order', 'event'], lambda order, event: build_absolute_uri(
                event,
@@ -337,6 +456,27 @@ def base_placeholders(sender, **kwargs):
                }
            ),
        ),
+        SimpleButtonPlaceholder(
+            'url_button', ['event', 'position'],
+            url_func=lambda event, position: build_absolute_uri(
+                event,
+                'presale:event.order.position', kwargs={
+                    'order': position.order.code,
+                    'secret': position.web_secret,
+                    'position': position.positionid
+                }
+            ),
+            text_func=lambda event, position: _("View registration details"),
+            sample_url_func=lambda event: build_absolute_uri(
+                event,
+                'presale:event.order.position', kwargs={
+                    'order': 'F8VVL',
+                    'secret': '6zzjnumtsx136ddy',
+                    'position': '123'
+                }
+            ),
+            sample_text_func=lambda event: _("View registration details"),
+        ),
        SimpleFunctionalTextPlaceholder(
            'url_info_change', ['position', 'event'], lambda position, event: build_absolute_uri(
                event,
@@ -592,8 +732,8 @@ def base_placeholders(sender, **kwargs):


 class FormPlaceholderMixin:
-    def _set_field_placeholders(self, fn, base_parameters):
-        placeholders = get_available_placeholders(self.event, base_parameters)
+    def _set_field_placeholders(self, fn, base_parameters, rich=False):
+        placeholders = get_available_placeholders(self.event, base_parameters, rich=rich)
        ht = format_placeholders_help_text(placeholders, self.event)
        if self.fields[fn].help_text:
            self.fields[fn].help_text += ' ' + str(ht)
@@ -604,7 +744,7 @@ class FormPlaceholderMixin:
        )


-def get_available_placeholders(event, base_parameters):
+def get_available_placeholders(event, base_parameters, rich=False):
    if 'order' in base_parameters:
        base_parameters.append('invoice_address')
        base_parameters.append('position_or_address')
@@ -613,6 +753,35 @@ def get_available_placeholders(event, base_parameters):
        if not isinstance(val, (list, tuple)):
            val = [val]
        for v in val:
+            if isinstance(v, BaseRichTextPlaceholder) and not rich:
+                continue
            if all(rp in base_parameters for rp in v.required_context):
                params[v.identifier] = v
    return params
+
+
+def get_sample_context(event, context_parameters, rich=True):
+    context_dict = {}
+    lbl = _('This value will be replaced based on dynamic parameters.')
+    for k, v in get_available_placeholders(event, context_parameters, rich=rich).items():
+        sample = v.render_sample(event)
+        if isinstance(sample, PlainHtmlAlternativeString):
+            context_dict[k] = PlainHtmlAlternativeString(
+                sample.plain,
+                '<{el} class="placeholder placeholder-html" title="{title}">{html}</{el}>'.format(
+                    el='div' if sample.is_block else 'span',
+                    title=lbl,
+                    html=sample.html,
+                )
+            )
+        elif str(sample).strip().startswith('* ') or str(sample).startswith('  '):
+            context_dict[k] = '<div class="placeholder" title="{}">{}</div>'.format(
+                lbl,
+                markdown_compile_email(str(sample))
+            )
+        else:
+            context_dict[k] = '<span class="placeholder" title="{}">{}</span>'.format(
+                lbl,
+                escape(sample)
+            )
+    return context_dict
@@ -91,9 +91,11 @@ def get_price(item: Item, variation: ItemVariation = None,

        if custom_price_is_net:
            price = tax_rule.tax(max(custom_price, price.net), base_price_is='net', override_tax_rate=price.rate,
+                                 override_tax_code=price.code,
                                 invoice_address=invoice_address, subtract_from_gross=bundled_sum)
        else:
            price = tax_rule.tax(max(custom_price, price.gross), base_price_is='gross', override_tax_rate=price.rate,
+                                 override_tax_code=price.code,
                                 invoice_address=invoice_address, subtract_from_gross=bundled_sum)
    else:
        price = tax_rule.tax(price, invoice_address=invoice_address, subtract_from_gross=bundled_sum)
@@ -146,10 +148,12 @@ def get_line_price(price_after_voucher: Decimal, custom_price_input: Decimal, cu

        if custom_price_input_is_net:
            price = tax_rule.tax(max(custom_price_input, price.net), base_price_is='net', override_tax_rate=price.rate,
-                                 invoice_address=invoice_address, subtract_from_gross=bundled_sum)
+                                 override_tax_code=price.code, invoice_address=invoice_address,
+                                 subtract_from_gross=bundled_sum)
        else:
            price = tax_rule.tax(max(custom_price_input, price.gross), base_price_is='gross', override_tax_rate=price.rate,
-                                 invoice_address=invoice_address, subtract_from_gross=bundled_sum)
+                                 override_tax_code=price.code, invoice_address=invoice_address,
+                                 subtract_from_gross=bundled_sum)
    else:
        price = tax_rule.tax(price_after_voucher, invoice_address=invoice_address, subtract_from_gross=bundled_sum,
                             base_price_is='gross' if is_bundled else 'auto')
@@ -21,6 +21,7 @@
 #
 import logging
 import os
+from decimal import Decimal

 from django.core.files.base import ContentFile
 from django.utils.timezone import now
@@ -97,9 +98,9 @@ def preview(event: int, provider: str):
    event = Event.objects.get(id=event)

    with rolledback_transaction(), language(event.settings.locale, event.settings.region):
-        item = event.items.create(name=_("Sample product"), default_price=42.23,
+        item = event.items.create(name=_("Sample product"), default_price=Decimal('42.23'),
                                  description=_("Sample product description"))
-        item2 = event.items.create(name=_("Sample workshop"), default_price=23.40)
+        item2 = event.items.create(name=_("Sample workshop"), default_price=Decimal('23.40'))

        from pretix.base.models import Order
        order = event.orders.create(status=Order.STATUS_PENDING, datetime=now(),
@@ -56,6 +56,7 @@ from django.utils.translation import (
 from django_countries.fields import Country
 from hierarkey.models import GlobalSettingsBase, Hierarkey
 from i18nfield.forms import I18nFormField, I18nTextarea, I18nTextInput
+from i18nfield.rest_framework import I18nField
 from i18nfield.strings import LazyI18nString
 from phonenumbers import PhoneNumber, parse
 from rest_framework import serializers
@@ -63,7 +64,7 @@ from rest_framework import serializers
 from pretix.api.serializers.fields import (
    ListMultipleChoiceField, UploadedFileField,
 )
-from pretix.api.serializers.i18n import I18nField, I18nURLField
+from pretix.api.serializers.i18n import I18nURLField
 from pretix.base.forms import I18nMarkdownTextarea, I18nURLFormField
 from pretix.base.models.tax import VAT_ID_COUNTRIES, TaxRule
 from pretix.base.reldate import (
@@ -1039,6 +1040,7 @@ DEFAULTS = {
                ('False', _('Do not generate invoices')),
                ('admin', _('Only manually in admin panel')),
                ('user', _('Automatically on user request')),
+                ('user_paid', _('Automatically on user request for paid orders')),
                ('True', _('Automatically for all created orders')),
                ('paid', _('Automatically on payment or when required by payment method')),
            ),
@@ -1051,6 +1053,7 @@ DEFAULTS = {
                ('paid', _('Automatically after payment or when required by payment method')),
                ('True', _('Automatically before payment for all created orders')),
                ('user', _('Automatically on user request')),
+                ('user_paid', _('Automatically on user request for paid orders')),
                ('admin', _('Only manually in admin panel')),
            ),
            help_text=_("Invoices will never be automatically generated for free orders.")
@@ -287,9 +287,9 @@ class PhoneNumberShredder(BaseDataShredder):


 class EmailAddressShredder(BaseDataShredder):
-    verbose_name = _('E-mails')
+    verbose_name = _('Emails')
    identifier = 'order_emails'
-    description = _('This will remove all e-mail addresses from orders and attendees, as well as logged email '
+    description = _('This will remove all email addresses from orders and attendees, as well as logged email '
                    'contents. This will also remove the association to customer accounts.')

    def generate_files(self) -> List[Tuple[str, str, str]]:
@@ -131,6 +131,9 @@
            text-align: left;
            padding: 0;
        }
+        .content table td.align-right {
+            text-align: right;
+        }

        a.button {
            display: inline-block;
@@ -178,6 +181,9 @@
        pre, pre code {
            white-space: pre-line;
        }
+        .text-right, .content table td.text-right {
+            text-align: right;
+        }

        {% if rtl %}
            body {
@@ -186,6 +192,9 @@
            .content {
                text-align: right;
            }
+            .text-right, .content table td.text-right {
+                text-align: left;
+            }
        {% endif %}

        {% block addcss %}{% endblock %}
@@ -0,0 +1,34 @@
+#
+# This file is part of pretix (Community Edition).
+#
+# Copyright (C) 2014-2020 Raphael Michel and contributors
+# Copyright (C) 2020-2021 rami.io GmbH and contributors
+#
+# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
+# Public License as published by the Free Software Foundation in version 3 of the License.
+#
+# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
+# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
+# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
+# this file, see <https://pretix.eu/about/en/license>.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
+# <https://www.gnu.org/licenses/>.
+#
+from django import template
+from django.utils.html import format_html
+
+register = template.Library()
+
+
+@register.simple_tag
+def icon(key, *args, **kwargs):
+    return format_html(
+        '<span class="fa fa-{} {}" aria-hidden="true"></span>',
+        key,
+        kwargs["class"] if "class" in kwargs else "",
+    )
@@ -52,12 +52,12 @@ def money_filter(value: Decimal, arg='', hide_currency=False):
        # would make the numbers incorrect. If this branch executes, it's likely a bug in
        # pretix, but we won't show wrong numbers!
        if hide_currency:
-            return floatformat(value, 2)
+            return floatformat(value, "2g")
        else:
-            return '{} {}'.format(arg, floatformat(value, 2))
+            return '{} {}'.format(arg, floatformat(value, "2g"))

    if hide_currency:
-        return floatformat(value, places)
+        return floatformat(value, f"{places}g")

    locale_parts = translation.get_language().split("-", 1)
    locale = locale_parts[0]
@@ -70,7 +70,7 @@ def money_filter(value: Decimal, arg='', hide_currency=False):
    try:
        return format_currency(value, arg, locale=locale)
    except:
-        return '{} {}'.format(arg, floatformat(value, places))
+        return '{} {}'.format(arg, floatformat(value, f"{places}g"))


@register.filter("money_numberfield")
@@ -305,6 +305,7 @@ def markdown_compile_email(source, allowed_tags=ALLOWED_TAGS, allowed_attributes
        source,
        extensions=[
            'markdown.extensions.sane_lists',
+            'markdown.extensions.tables',
            EmailNl2BrExtension(),
            LinkifyAndCleanExtension(
                linker,
@@ -0,0 +1,42 @@
+#
+# This file is part of pretix (Community Edition).
+#
+# Copyright (C) 2014-2020 Raphael Michel and contributors
+# Copyright (C) 2020-2021 rami.io GmbH and contributors
+#
+# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
+# Public License as published by the Free Software Foundation in version 3 of the License.
+#
+# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
+# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
+# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
+# this file, see <https://pretix.eu/about/en/license>.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
+# <https://www.gnu.org/licenses/>.
+#
+from django import template
+from django.utils.html import format_html, mark_safe
+
+register = template.Library()
+
+
+@register.simple_tag
+def textbubble(type, *args, **kwargs):
+    return format_html(
+        '<span class="textbubble-{}">{}',
+        type or "info",
+        "" if "icon" not in kwargs else format_html(
+            '<i class="fa fa-{}" aria-hidden="true"></i> ',
+            kwargs["icon"]
+        )
+    )
+
+
+@register.simple_tag
+def endtextbubble():
+    return mark_safe('</span>')
@@ -22,16 +22,30 @@
 import pycountry
 from django.http import JsonResponse

+from pretix.base.addressvalidation import (
+    COUNTRIES_WITH_STREET_ZIPCODE_AND_CITY_REQUIRED,
+)
+from pretix.base.models.tax import VAT_ID_COUNTRIES
 from pretix.base.settings import COUNTRIES_WITH_STATE_IN_ADDRESS


 def states(request):
    cc = request.GET.get("country", "DE")
+    info = {
+        'street': {'required': True},
+        'zipcode': {'required': cc in COUNTRIES_WITH_STREET_ZIPCODE_AND_CITY_REQUIRED},
+        'city': {'required': cc in COUNTRIES_WITH_STREET_ZIPCODE_AND_CITY_REQUIRED},
+        'state': {'visible': cc in COUNTRIES_WITH_STATE_IN_ADDRESS, 'required': cc in COUNTRIES_WITH_STATE_IN_ADDRESS},
+        'vat_id': {'visible': cc in VAT_ID_COUNTRIES, 'required': False},
+    }
    if cc not in COUNTRIES_WITH_STATE_IN_ADDRESS:
-        return JsonResponse({'data': []})
+        return JsonResponse({'data': [], **info, })
    types, form = COUNTRIES_WITH_STATE_IN_ADDRESS[cc]
    statelist = [s for s in pycountry.subdivisions.get(country_code=cc) if s.type in types]
-    return JsonResponse({'data': [
-        {'name': s.name, 'code': s.code[3:]}
-        for s in sorted(statelist, key=lambda s: s.name)
-    ]})
+    return JsonResponse({
+        'data': [
+            {'name': s.name, 'code': s.code[3:]}
+            for s in sorted(statelist, key=lambda s: s.name)
+        ],
+        **info,
+    })
@@ -35,7 +35,7 @@
 # License for the specific language governing permissions and limitations under the License.

 from decimal import Decimal
-from urllib.parse import urlencode, urlparse
+from urllib.parse import urlencode
 from zoneinfo import ZoneInfo

 import pycountry
@@ -63,6 +63,7 @@ from pretix.base.forms import (
 )
 from pretix.base.models import Event, Organizer, TaxRule, Team
 from pretix.base.models.event import EventFooterLink, EventMetaValue, SubEvent
+from pretix.base.models.tax import TAX_CODE_LISTS
 from pretix.base.reldate import RelativeDateField, RelativeDateTimeField
 from pretix.base.services.placeholders import FormPlaceholderMixin
 from pretix.base.settings import (
@@ -76,8 +77,10 @@ from pretix.control.forms import (
 )
 from pretix.control.forms.widgets import Select2
 from pretix.helpers.countries import CachedCountries
-from pretix.multidomain.models import KnownDomain
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.models import AlternativeDomainAssignment, KnownDomain
+from pretix.multidomain.urlreverse import (
+    build_absolute_uri, get_organizer_domain,
+)
 from pretix.plugins.banktransfer.payment import BankTransfer
 from pretix.presale.style import get_fonts

@@ -136,6 +139,11 @@ class EventWizardBasicsForm(I18nModelForm):
        choices=settings.LANGUAGES,
        label=_("Default language"),
    )
+    no_taxes = forms.BooleanField(
+        label=_("I don't want to specify taxes now"),
+        help_text=_("You can always configure tax rates later."),
+        required=False,
+    )
    tax_rate = forms.DecimalField(
        label=_("Sales tax rate"),
        help_text=_("Do you need to pay sales tax on your tickets? In this case, please enter the applicable tax rate "
@@ -223,6 +231,11 @@ class EventWizardBasicsForm(I18nModelForm):
            raise ValidationError({
                'timezone': _('Your default locale must be specified.')
            })
+        if not data.get("no_taxes") and not data.get("tax_rate"):
+            raise ValidationError({
+                'tax_rate': _('You have not specified a tax rate. If you do not want us to compute sales taxes, please '
+                              'check "{field}" above.').format(field=self.fields["no_taxes"].label)
+            })

        # change timezone
        zone = ZoneInfo(data.get('timezone'))
@@ -353,14 +366,9 @@ class EventUpdateForm(I18nModelForm):

    def __init__(self, *args, **kwargs):
        self.change_slug = kwargs.pop('change_slug', False)
-        self.domain = kwargs.pop('domain', False)

        kwargs.setdefault('initial', {})
        self.instance = kwargs['instance']
-        if self.domain and self.instance:
-            initial_domain = self.instance.domains.first()
-            if initial_domain:
-                kwargs['initial'].setdefault('domain', initial_domain.domainname)

        super().__init__(*args, **kwargs)
        if not self.change_slug:
@@ -369,48 +377,54 @@ class EventUpdateForm(I18nModelForm):
        self.fields['location'].widget.attrs['placeholder'] = _(
            'Sample Conference Center\nHeidelberg, Germany'
        )
-        if self.domain:
+
+        try:
            self.fields['domain'] = forms.CharField(
                max_length=255,
-                label=_('Custom domain'),
+                label=_('Domain'),
+                initial=self.instance.domain.domainname,
+                required=False,
+                disabled=True,
+                help_text=_('You can configure this in your organizer settings.')
+            )
+        except KnownDomain.DoesNotExist:
+            domain = get_organizer_domain(self.instance.organizer)
+            try:
+                current_domain_assignment = self.instance.alternative_domain_assignment
+            except AlternativeDomainAssignment.DoesNotExist:
+                current_domain_assignment = None
+            self.fields['domain'] = forms.ChoiceField(
+                label=_('Domain'),
+                help_text=_('You can add more domains in your organizer account.'),
+                choices=[('', _('Same as organizer account') + (f" ({domain})" if domain else ""))] + [
+                    (d.domainname, d.domainname) for d in self.instance.organizer.domains.filter(mode=KnownDomain.MODE_ORG_ALT_DOMAIN)
+                ],
+                initial=current_domain_assignment.domain_id if current_domain_assignment else "",
                required=False,
-                help_text=_('You need to configure the custom domain in the webserver beforehand.')
            )
        self.fields['limit_sales_channels'].queryset = self.event.organizer.sales_channels.all()
        self.fields['limit_sales_channels'].widget = SalesChannelCheckboxSelectMultiple(self.event, attrs={
            'data-inverse-dependency': '<[name$=all_sales_channels]',
        }, choices=self.fields['limit_sales_channels'].widget.choices)

-    def clean_domain(self):
-        d = self.cleaned_data['domain']
-        if d:
-            if d == urlparse(settings.SITE_URL).hostname:
-                raise ValidationError(
-                    _('You cannot choose the base domain of this installation.')
-                )
-            if KnownDomain.objects.filter(domainname=d).exclude(event=self.instance.pk).exists():
-                raise ValidationError(
-                    _('This domain is already in use for a different event or organizer.')
-                )
-        return d
-
    def save(self, commit=True):
        instance = super().save(commit)

-        if self.domain:
-            current_domain = instance.domains.first()
-            if self.cleaned_data['domain']:
-                if current_domain and current_domain.domainname != self.cleaned_data['domain']:
-                    current_domain.delete()
-                    KnownDomain.objects.create(
-                        organizer=instance.organizer, event=instance, domainname=self.cleaned_data['domain']
-                    )
-                elif not current_domain:
-                    KnownDomain.objects.create(
-                        organizer=instance.organizer, event=instance, domainname=self.cleaned_data['domain']
-                    )
-            elif current_domain:
-                current_domain.delete()
+        try:
+            current_domain_assignment = instance.alternative_domain_assignment
+        except AlternativeDomainAssignment.DoesNotExist:
+            current_domain_assignment = None
+        if self.cleaned_data['domain'] and not hasattr(instance, 'domain'):
+            domain = self.instance.organizer.domains.get(mode=KnownDomain.MODE_ORG_ALT_DOMAIN, domainname=self.cleaned_data["domain"])
+            AlternativeDomainAssignment.objects.update_or_create(
+                event=instance,
+                defaults={
+                    "domain": domain,
+                }
+            )
+            instance.cache.clear()
+        elif current_domain_assignment:
+            current_domain_assignment.delete()
            instance.cache.clear()

        return instance
@@ -1372,7 +1386,7 @@ class MailSettingsForm(FormPlaceholderMixin, SettingsForm):
        self.event.meta_values_cached = self.event.meta_values.select_related('property').all()

        for k, v in self.base_context.items():
-            self._set_field_placeholders(k, v)
+            self._set_field_placeholders(k, v, rich=k.startswith('mail_text_'))

        for k, v in list(self.fields.items()):
            if k.endswith('_attendee') and not event.settings.attendee_emails_asked:
@@ -1491,6 +1505,11 @@ class TaxRuleLineForm(I18nForm):
            ('require_approval', _('Order requires approval')),
        ],
    )
+    code = forms.ChoiceField(
+        label=_("Tax code"),
+        choices=[("", _("Default tax code")), *TAX_CODE_LISTS],
+        required=False,
+    )
    rate = forms.DecimalField(
        label=_('Deviating tax rate'),
        max_digits=10, decimal_places=2,
@@ -1505,6 +1524,43 @@ class TaxRuleLineForm(I18nForm):
        })
    )

+    def __init__(self, *args, **kwargs):
+        self.parent_form = kwargs.pop("parent_form")
+        super().__init__(*args, **kwargs)
+
+    def clean(self):
+        d = super().clean()
+
+        parent_code = self.parent_form.cleaned_data.get("code")
+        parent_rate = self.parent_form.cleaned_data.get("rate")
+
+        code = d.get("code") or parent_code
+        rate = d.get("rate")
+        if rate is None:
+            rate = parent_rate
+
+        if d.get("action") in ("reverse", "no", "block") and d.get("rate"):
+            raise ValidationError(_("A combination of this calculation mode with a non-zero tax rate does not make sense."))
+
+        if d.get("action") == "reverse" and d.get("code") and code != "AE":
+            # Reverse charge but code is not reverse charge -- this is the one case we ignore if the "default code"
+            # is used because it is the one scenario we can auto-fix
+            raise ValidationError(_("This combination of calculation mode and tax code does not make sense."))
+
+        if d.get("action") == "no" and code and code.split("/")[0] in ("S", "AE", "L", "M", "B"):
+            # No VAT but code indicates VAT
+            raise ValidationError(_("This combination of calculation mode and tax code does not make sense."))
+
+        if d.get("action") == "vat" and code and rate != Decimal("0.00") and code.split("/")[0] in ("O", "E", "Z", "G", "K", "AE"):
+            # VAT, but code indicates exempt
+            raise ValidationError(_("A combination of this tax code with a non-zero tax rate does not make sense."))
+
+        if d.get("action") == "vat" and code and rate == Decimal("0.00") and code.split("/")[0] in ("S", "L", "M", "B"):
+            # no VAT, but code indicates non-exempt
+            raise ValidationError(_("A combination of this tax code with a zero tax rate does not make sense."))
+
+        return d
+

 class I18nBaseFormSet(I18nFormSetMixin, forms.BaseFormSet):
    # compatibility shim for django-i18nfield library
@@ -1516,8 +1572,16 @@ class I18nBaseFormSet(I18nFormSetMixin, forms.BaseFormSet):
        super().__init__(*args, **kwargs)


+class BaseTaxRuleLineFormSet(I18nBaseFormSet):
+
+    def __init__(self, *args, **kwargs):
+        self.parent_form = kwargs.pop('parent_form')
+        super().__init__(*args, **kwargs)
+        self.form_kwargs['parent_form'] = self.parent_form
+
+
 TaxRuleLineFormSet = formset_factory(
-    TaxRuleLineForm, formset=I18nBaseFormSet,
+    TaxRuleLineForm, formset=BaseTaxRuleLineFormSet,
    can_order=True, can_delete=True, extra=0
 )

@@ -1525,7 +1589,16 @@ TaxRuleLineFormSet = formset_factory(
 class TaxRuleForm(I18nModelForm):
    class Meta:
        model = TaxRule
-        fields = ['name', 'rate', 'price_includes_tax', 'eu_reverse_charge', 'home_country', 'internal_name', 'keep_gross_if_rate_changes']
+        fields = [
+            'name',
+            'rate',
+            'price_includes_tax',
+            'code',
+            'eu_reverse_charge',
+            'home_country',
+            'internal_name',
+            'keep_gross_if_rate_changes'
+        ]


 class WidgetCodeForm(forms.Form):
@@ -549,7 +549,7 @@ class EventOrderExpertFilterForm(EventOrderFilterForm):
    )
    email = forms.CharField(
        required=False,
-        label=_('E-mail address')
+        label=_('Email address')
    )
    comment = forms.CharField(
        required=False,
@@ -563,7 +563,7 @@ class EventOrderExpertFilterForm(EventOrderFilterForm):
    email_known_to_work = forms.NullBooleanField(
        required=False,
        widget=FilterNullBooleanSelect,
-        label=_('E-mail address verified'),
+        label=_('Email address verified'),
    )
    total = forms.DecimalField(
        localize=True,
@@ -648,7 +648,7 @@ class EventOrderExpertFilterForm(EventOrderFilterForm):
        )
        self.fields['attendee_email'] = forms.CharField(
            required=False,
-            label=_('Attendee e-mail address')
+            label=_('Attendee email address')
        )
        self.fields['attendee_address_company'] = forms.CharField(
            required=False,
@@ -128,7 +128,7 @@ class UpdateSettingsForm(SettingsForm):
    )
    update_check_email = forms.EmailField(
        required=False,
-        label=_("E-mail notifications"),
+        label=_("Email notifications"),
        help_text=_("We will notify you at this address if we detect that a new update is available. This "
                    "address will not be transmitted to pretix.eu, the emails will be sent by this server "
                    "locally.")
@@ -133,63 +133,108 @@ class OrganizerDeleteForm(forms.Form):
 class OrganizerUpdateForm(OrganizerForm):

    def __init__(self, *args, **kwargs):
-        self.domain = kwargs.pop('domain', False)
        self.change_slug = kwargs.pop('change_slug', False)
        kwargs.setdefault('initial', {})
        self.instance = kwargs['instance']
-        if self.domain and self.instance:
-            initial_domain = self.instance.domains.filter(event__isnull=True).first()
-            if initial_domain:
-                kwargs['initial'].setdefault('domain', initial_domain.domainname)

        super().__init__(*args, **kwargs)
        if not self.change_slug:
            self.fields['slug'].widget.attrs['readonly'] = 'readonly'
-        if self.domain:
-            self.fields['domain'] = forms.CharField(
-                max_length=255,
-                label=_('Custom domain'),
-                required=False,
-                help_text=_('You need to configure the custom domain in the webserver beforehand.')
-            )
-
-    def clean_domain(self):
-        d = self.cleaned_data['domain']
-        if d:
-            if d == urlparse(settings.SITE_URL).hostname:
-                raise ValidationError(
-                    _('You cannot choose the base domain of this installation.')
-                )
-            if KnownDomain.objects.filter(domainname=d).exclude(organizer=self.instance.pk,
-                                                                event__isnull=True).exists():
-                raise ValidationError(
-                    _('This domain is already in use for a different event or organizer.')
-                )
-        return d

    def clean_slug(self):
        if self.change_slug:
            return self.cleaned_data['slug']
        return self.instance.slug

-    def save(self, commit=True):
-        instance = super().save(commit)

-        if self.domain:
-            current_domain = instance.domains.filter(event__isnull=True).first()
-            if self.cleaned_data['domain']:
-                if current_domain and current_domain.domainname != self.cleaned_data['domain']:
-                    current_domain.delete()
-                    KnownDomain.objects.create(organizer=instance, domainname=self.cleaned_data['domain'])
-                elif not current_domain:
-                    KnownDomain.objects.create(organizer=instance, domainname=self.cleaned_data['domain'])
-            elif current_domain:
-                current_domain.delete()
-            instance.cache.clear()
-            for ev in instance.events.all():
-                ev.cache.clear()
+class KnownDomainForm(forms.ModelForm):
+    class Meta:
+        model = KnownDomain
+        fields = ["domainname", "mode", "event"]
+        field_classes = {
+            "event": SafeModelChoiceField,
+        }

-        return instance
+    def __init__(self, *args, **kwargs):
+        self.organizer = kwargs.pop('organizer')
+        super().__init__(*args, **kwargs)
+        self.fields["event"].queryset = self.organizer.events.all()
+        if self.instance and self.instance.pk:
+            self.fields["domainname"].widget.attrs['readonly'] = 'readonly'
+
+    def clean_domainname(self):
+        if self.instance and self.instance.pk:
+            return self.instance.domainname
+        d = self.cleaned_data['domainname']
+        if d:
+            if d == urlparse(settings.SITE_URL).hostname:
+                raise ValidationError(
+                    _('You cannot choose the base domain of this installation.')
+                )
+            if KnownDomain.objects.filter(domainname=d).exclude(organizer=self.instance.organizer).exists():
+                raise ValidationError(
+                    _('This domain is already in use for a different event or organizer.')
+                )
+        return d
+
+    def clean(self):
+        d = super().clean()
+
+        if d["mode"] == KnownDomain.MODE_ORG_DOMAIN and d["event"]:
+            raise ValidationError(
+                _("Do not choose an event for this mode.")
+            )
+
+        if d["mode"] == KnownDomain.MODE_ORG_ALT_DOMAIN and d["event"]:
+            raise ValidationError(
+                _("Do not choose an event for this mode. You can assign events to this domain in event settings.")
+            )
+
+        if d["mode"] == KnownDomain.MODE_EVENT_DOMAIN and not d["event"]:
+            raise ValidationError(
+                _("You need to choose an event.")
+            )
+
+        return d
+
+
+class BaseKnownDomainFormSet(forms.BaseInlineFormSet):
+    def __init__(self, *args, **kwargs):
+        self.organizer = kwargs.pop('organizer')
+        super().__init__(*args, **kwargs)
+
+    def _construct_form(self, i, **kwargs):
+        kwargs['organizer'] = self.organizer
+        return super()._construct_form(i, **kwargs)
+
+    @property
+    def empty_form(self):
+        form = self.form(
+            auto_id=self.auto_id,
+            prefix=self.add_prefix('__prefix__'),
+            empty_permitted=True,
+            use_required_attribute=False,
+            organizer=self.organizer,
+        )
+        self.add_fields(form, None)
+        return form
+
+    def clean(self):
+        super().clean()
+        data = [f.cleaned_data for f in self.forms]
+
+        if len([d for d in data if d.get("mode") == KnownDomain.MODE_ORG_DOMAIN and not d.get("DELETE")]) > 1:
+            raise ValidationError(_("You may set only one organizer domain."))
+
+        return data
+
+
+KnownDomainFormset = inlineformset_factory(
+    Organizer, KnownDomain,
+    KnownDomainForm,
+    formset=BaseKnownDomainFormSet,
+    can_order=False, can_delete=True, extra=0
+)


 class SafeOrderPositionChoiceField(forms.ModelChoiceField):
@@ -40,7 +40,7 @@ class StaffSessionForm(forms.ModelForm):

 class UserEditForm(forms.ModelForm):
    error_messages = {
-        'duplicate_identifier': _("There already is an account associated with this e-mail address. "
+        'duplicate_identifier': _("There already is an account associated with this email address. "
                                  "Please choose a different one."),
        'pw_mismatch': _("Please enter the same password twice"),
    }
@@ -78,7 +78,7 @@ def get_event_navigation(request: HttpRequest):
                'active': url.url_name == 'event.settings.tickets',
            },
            {
-                'label': _('E-mail'),
+                'label': _('Email'),
                'url': reverse('control:event.settings.mail', kwargs={
                    'event': request.event.slug,
                    'organizer': request.event.organizer.slug,
@@ -132,16 +132,6 @@ def get_event_navigation(request: HttpRequest):
            'icon': 'wrench',
            'children': event_settings
        })
-        if request.event.has_subevents:
-            nav.append({
-                'label': pgettext_lazy('subevent', 'Dates'),
-                'url': reverse('control:event.subevents', kwargs={
-                    'event': request.event.slug,
-                    'organizer': request.event.organizer.slug,
-                }),
-                'active': ('event.subevent' in url.url_name),
-                'icon': 'calendar',
-            })

    if 'can_change_items' in request.eventpermset:
        nav.append({
@@ -197,6 +187,18 @@ def get_event_navigation(request: HttpRequest):
            ]
        })

+    if 'can_change_event_settings' in request.eventpermset:
+        if request.event.has_subevents:
+            nav.append({
+                'label': pgettext_lazy('subevent', 'Dates'),
+                'url': reverse('control:event.subevents', kwargs={
+                    'event': request.event.slug,
+                    'organizer': request.event.organizer.slug,
+                }),
+                'active': ('event.subevent' in url.url_name),
+                'icon': 'calendar',
+            })
+
    if 'can_view_orders' in request.eventpermset:
        children = [
            {
@@ -496,7 +498,7 @@ def get_organizer_navigation(request):
                    'active': url.url_name.startswith('organizer.propert'),
                },
                {
-                    'label': _('E-mail'),
+                    'label': _('Email'),
                    'url': reverse('control:organizer.settings.mail', kwargs={
                        'organizer': request.organizer.slug,
                    }),
@@ -61,6 +61,7 @@
            <script type="text/javascript" src="{% static "fileupload/jquery.fileupload.js" %}"></script>
            <script type="text/javascript" src="{% static "lightbox/js/lightbox.js" %}"></script>
            <script type="text/javascript" src="{% static "are-you-sure/jquery.are-you-sure.js" %}"></script>
+            <script type="text/javascript" src="{% static "pretixbase/js/addressform.js" %}"></script>
 		{% endcompress %}
        {{ html_head|safe }}

@@ -127,6 +127,7 @@
                                <strong>
                                    <a href="{% url "control:event.order" event=request.event.slug organizer=request.event.organizer.slug code=c.position.order.code %}">{{ c.position.order.code }}</a>-{{ c.position.positionid }}
                                </strong>
+                                {% include "pretixcontrol/checkin/fragment_checkin_source_type.html" with source_type=c.raw_source_type %}
                                {% if c.position.attendee_name %}
                                    <br>
                                    <small>
@@ -143,7 +144,7 @@
                                    </small>
                                {% endif %}
                            {% else %}
-                                <span class="fa fa-qrcode fa-fw"></span>
+                                {% include "pretixcontrol/checkin/fragment_checkin_source_type.html" with source_type=c.raw_source_type %}
                                <span title="{{ c.raw_barcode }}">
                                    {{ c.raw_barcode|slice:":16" }}{% if c.raw_barcode|length > 16 %}…{% endif %}
                                    <button type="button" class="btn btn-xs btn-link btn-clipboard" data-clipboard-text="{{ c.raw_barcode }}">
@@ -0,0 +1,15 @@
+{% load i18n %}
+{% load static %}
+{% load getitem %}
+
+{% if source_type %}
+    {% with media_types|getitem:source_type as media_type %}
+        {% if "." in media_type.icon %}
+            <img src="{% static media_type.icon %}" class="fa-like-image"
+                 data-toggle="tooltip" title="{{ media_type.verbose_name }}">
+        {% else %}
+            <span class="fa fa-fw fa-{{ media_type.icon }} text-muted"
+                  data-toggle="tooltip" title="{{ media_type.verbose_name }}"></span>
+        {% endif %}
+    {% endwith %}
+{% endif %}
@@ -185,6 +185,7 @@
                                            <span class="fa fa-magic text-muted"
                                                  data-toggle="tooltip" title="{% trans "Checked in automatically" %}"></span>
                                        {% endif %}
+                                        {% include "pretixcontrol/checkin/fragment_checkin_source_type.html" with source_type=e.last_entry_source_type %}
                                    {% endif %}
                                {% endif %}
                            </td>
@@ -5,7 +5,7 @@
 {% load static %}
 {% block title %}{% trans "Organizer" %}{% endblock %}
 {% block content %}
-    <h1>{% trans "E-mail sending" %}</h1>
+    <h1>{% trans "Email sending" %}</h1>
    <form action="" method="post" class="form-horizontal">
        {% csrf_token %}
        <div class="panel-group" id="email">
@@ -27,7 +27,7 @@
                    <div class="panel-body form-horizontal">
                        <p>
                            {% blocktrans trimmed %}
-                                E-mails will be sent through the system's default server. They will show the following
+                                Emails will be sent through the system's default server. They will show the following
                                sender information:
                            {% endblocktrans %}
                        </p>
@@ -62,7 +62,7 @@
                    <div class="panel-body form-horizontal">
                        <p>
                            {% blocktrans trimmed %}
-                                E-mails will be sent through the system's default server but with your own sender
+                                Emails will be sent through the system's default server but with your own sender
                                address.
                                This will make your emails look more personalized and coming directly from you, but it
                                also might require some extra steps to ensure good deliverability.
@@ -5,7 +5,7 @@
 {% load static %}
 {% block title %}{% trans "Organizer" %}{% endblock %}
 {% block content %}
-    <h1>{% trans "E-mail sending" %}</h1>
+    <h1>{% trans "Email sending" %}</h1>
    <form action="" method="post" class="form-horizontal">
        {% csrf_token %}
        {% for k, v in request.POST.items %}
@@ -5,7 +5,7 @@
 {% load static %}
 {% block title %}{% trans "Organizer" %}{% endblock %}
 {% block content %}
-    <h1>{% trans "E-mail sending" %}</h1>
+    <h1>{% trans "Email sending" %}</h1>
    <form action="" method="post" class="form-horizontal">
        {% csrf_token %}
        {% for k, v in request.POST.items %}
@@ -4,7 +4,7 @@
 {% load hierarkey_form %}
 {% load static %}
 {% block inside %}
-    <h1>{% trans "E-mail settings" %}</h1>
+    <h1>{% trans "Email settings" %}</h1>
    <form action="" method="post" class="form-horizontal" enctype="multipart/form-data"
            mail-preview-url="{% url "control:event.settings.mail.preview" event=request.event.slug organizer=request.event.organizer.slug %}">
        {% csrf_token %}
@@ -63,7 +63,7 @@
                {% bootstrap_field form.mail_attach_ical_description layout="control" %}
            </fieldset>
            <fieldset>
-                <legend>{% trans "E-mail design" %}</legend>
+                <legend>{% trans "Email design" %}</legend>
                <div class="row">
                    {% for r in renderers.values %}
                        <div class="col-md-3">
@@ -84,7 +84,7 @@
                </div>
            </fieldset>
            <fieldset>
-                <legend>{% trans "E-mail content" %}</legend>
+                <legend>{% trans "Email content" %}</legend>
                <h4>{% trans "Text" %}</h4>
                <div class="panel-group" id="questions_group">
                    {% blocktrans asvar title_placed_order %}Placed order{% endblocktrans %}
@@ -22,7 +22,7 @@
                {% bootstrap_field form.name layout="control" %}
                {% bootstrap_field form.slug layout="control" %}
                {% if form.domain %}
-                    {% bootstrap_field form.domain layout="control" %}
+                    {% bootstrap_field form.domain layout="horizontal" %}
                {% endif %}
                {% bootstrap_field form.date_from layout="control" %}
                {% bootstrap_field form.date_to layout="control" %}
@@ -67,7 +67,7 @@
                <h4>{% trans "Customer data (once per order)" %}</h4>
                <div class="form-group">
                    <label class="control-label col-md-3">
-                        {% trans "E-mail" %}
+                        {% trans "Email" %}
                    </label>
                    <div class="col-md-9">
                        <div class="checkbox">
@@ -26,6 +26,7 @@
                        {% bootstrap_field form.name layout="control" %}
                        {% bootstrap_field form.internal_name layout="control" %}
                        {% bootstrap_field form.rate addon_after="%" layout="control" %}
+                        {% bootstrap_field form.code layout="control" %}
                        {% bootstrap_field form.price_includes_tax layout="control" %}
                    </fieldset>
                    <fieldset>
@@ -52,6 +53,18 @@
                            {% trans "All of these rules will only apply if an invoice address is set." %}
                        </div>

+                        <div class="row">
+                            <div class="col-sm-6 col-md-3 col-lg-3">
+                                <strong>{% trans "Condition" %}</strong>
+                            </div>
+                            <div class="col-sm-6 col-md-3 col-lg-3">
+                                <strong>{% trans "Calculation" %}</strong>
+                            </div>
+                            <div class="col-sm-6 col-md-3 col-lg-4 col-sm-offset-6 col-md-offset-0">
+                                <strong>{% trans "Reason" %}</strong>
+                            </div>
+                        </div>
+                    
                        <div class="formset tax-rules-formset" data-formset data-formset-prefix="{{ formset.prefix }}">
                            {{ formset.management_form }}
                            {% bootstrap_formset_errors formset %}
@@ -65,14 +78,17 @@
                                        </div>
                                        <div class="col-sm-6 col-md-3 col-lg-3">
                                            {% bootstrap_field formset.empty_form.country layout='inline' form_group_class="" %}
-                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-4">
                                            {% bootstrap_field formset.empty_form.address_type layout='inline' form_group_class="" %}
                                        </div>
                                        <div class="col-sm-6 col-md-3 col-lg-3">
                                            {% bootstrap_field formset.empty_form.action layout='inline' form_group_class="" %}
+                                            {% bootstrap_field formset.empty_form.rate layout='inline' form_group_class="" %}
                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-2 text-right flip">
+                                        <div class="col-sm-6 col-md-3 col-lg-4 col-sm-offset-6 col-md-offset-0">
+                                            {% bootstrap_field formset.empty_form.code layout='inline' form_group_class="" %}
+                                            {% bootstrap_field formset.empty_form.invoice_text layout='inline' form_group_class="" %}
+                                        </div>
+                                        <div class="col-sm-6 col-md-3 col-lg-2 col-sm-offset-6 col-md-offset-0 text-right flip">
                                            <button type="button" class="btn btn-default" data-formset-move-up-button>
                                                <i class="fa fa-arrow-up"></i></button>
                                            <button type="button" class="btn btn-default" data-formset-move-down-button>
@@ -80,12 +96,6 @@
                                            <button type="button" class="btn btn-danger" data-formset-delete-button>
                                                <i class="fa fa-trash"></i></button>
                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-4 col-md-offset-3">
-                                            {% bootstrap_field formset.empty_form.invoice_text layout='inline' form_group_class="" %}
-                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-3">
-                                            {% bootstrap_field formset.empty_form.rate layout='inline' form_group_class="" %}
-                                        </div>
                                    </div>
                                {% endescapescript %}
                            </script>
@@ -100,14 +110,17 @@
                                        </div>
                                        <div class="col-sm-6 col-md-3 col-lg-3">
                                            {% bootstrap_field form.country layout='inline' form_group_class="" %}
-                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-4">
                                            {% bootstrap_field form.address_type layout='inline' form_group_class="" %}
                                        </div>
                                        <div class="col-sm-6 col-md-3 col-lg-3">
                                            {% bootstrap_field form.action layout='inline' form_group_class="" %}
+                                            {% bootstrap_field form.rate layout='inline' form_group_class="" %}
                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-2 text-right flip">
+                                        <div class="col-sm-6 col-md-3 col-lg-4 col-sm-offset-6 col-md-offset-0">
+                                            {% bootstrap_field form.code layout='inline' form_group_class="" %}
+                                            {% bootstrap_field form.invoice_text layout='inline' form_group_class="" %}
+                                        </div>
+                                        <div class="col-sm-6 col-md-3 col-lg-2 col-sm-offset-6 col-md-offset-0 text-right flip">
                                            <button type="button" class="btn btn-default" data-formset-move-up-button>
                                                <i class="fa fa-arrow-up"></i></button>
                                            <button type="button" class="btn btn-default" data-formset-move-down-button>
@@ -115,12 +128,6 @@
                                            <button type="button" class="btn btn-danger" data-formset-delete-button>
                                                <i class="fa fa-trash"></i></button>
                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-4 col-md-offset-3">
-                                            {% bootstrap_field form.invoice_text layout='inline' form_group_class="" %}
-                                        </div>
-                                        <div class="col-sm-6 col-md-3 col-lg-3">
-                                            {% bootstrap_field form.rate layout='inline' form_group_class="" %}
-                                        </div>
                                    </div>
                                {% endfor %}
                            </div>
@@ -41,7 +41,10 @@
        {% endif %}
        {% include "pretixcontrol/event/fragment_geodata.html" %}
        {% bootstrap_field form.currency layout="control" %}
-        {% bootstrap_field form.tax_rate addon_after="%" layout="control" %}
+        {% bootstrap_field form.no_taxes layout="control" %}
+        <div data-display-dependency="#{{ form.no_taxes.id_for_label }}" data-inverse>
+            {% bootstrap_field form.tax_rate addon_after="%" layout="control" %}
+        </div>
    </fieldset>
    <fieldset>
        <legend>{% trans "Display settings" %}</legend>
@@ -220,7 +220,6 @@
                    {% endif %}
                    {% bootstrap_field formset.empty_form.available_from visibility_field=formset.empty_form.available_from_mode layout="control_with_visibility"  %}
                    {% bootstrap_field formset.empty_form.available_until visibility_field=formset.empty_form.available_until_mode layout="control_with_visibility" %}
-                    {% bootstrap_field formset.empty_form.available_until layout="control" %}
                    {% bootstrap_field formset.empty_form.all_sales_channels layout="control" %}
                    {% bootstrap_field formset.empty_form.limit_sales_channels layout="control" %}
                    {% bootstrap_field formset.empty_form.hide_without_voucher layout="control" %}
@@ -202,6 +202,12 @@
                                        + {{ position.tax_rate }}%)
                                    </small>
                                {% endif %}
+                                {% if position.tax_code %}
+                                    <br>
+                                    <small>
+                                        {{ position.get_tax_code_display }}
+                                    </small>
+                                {% endif %}
                            </div>
                            <div class="col-sm-4 field-container">
                                {% bootstrap_field position.form.price addon_after=request.event.currency layout='inline' %}
@@ -420,6 +426,12 @@
                                        + {{ fee.tax_rate }}%)
                                    </small>
                                {% endif %}
+                                {% if fee.tax_code %}
+                                    <br>
+                                    <small>
+                                        {{ fee.get_tax_code_display }}
+                                    </small>
+                                {% endif %}
                            </div>
                            <div class="col-sm-4 field-container">
                                {% bootstrap_field fee.form.value addon_after=request.event.currency layout='inline' %}
@@ -46,11 +46,13 @@
                    <div id="cp{{ pos.id }}">
                        <div class="panel-body">
                            {% for form in forms %}
-                                {% if form.pos.item != pos.item %}
-                                    {# Add-Ons #}
-                                    <legend>+ {{ form.pos.item }}</legend>
-                                {% endif %}
-                                {% bootstrap_form form layout="control" %}
+                                <div class="profile-scope">
+                                    {% if form.pos.item != pos.item %}
+                                        {# Add-Ons #}
+                                        <legend>+ {{ form.pos.item }}</legend>
+                                    {% endif %}
+                                    {% bootstrap_form form layout="control" %}
+                                </div>
                            {% endfor %}
                        </div>
                    </div>
@@ -24,7 +24,7 @@
            {% endif %}
            {% if request.method == "POST" %}
                <fieldset>
-                    <legend>{% trans "E-mail preview" %}</legend>
+                    <legend>{% trans "Email preview" %}</legend>
                    <div class="tab-pane mail-preview-group">
                        <div lang="{{ order.locale }}" class="mail-preview">
                            <strong>{{ preview_output.subject }}</strong><br><br>
@@ -19,6 +19,7 @@
            <th>{% trans "Date" %}</th>
            <th>{% trans "Product" %}</th>
            <th class="text-right flip">{% trans "Tax rate" %}</th>
+            <th>{% trans "Tax code" %}</th>
            <th class="text-right flip">{% trans "Quantity" %}</th>
            <th class="text-right flip">{% trans "Single price" %}</th>
            <th class="text-right flip">{% trans "Total tax value" %}</th>
@@ -52,6 +53,7 @@
                    {% endif %}
                </td>
                <td class="text-right flip">{{ t.tax_rate }} %</td>
+                <td>{{ t.get_tax_code_display }}</td>
                <td class="text-right flip">{{ t.count }} &times;</td>
                <td class="text-right flip">{{ t.price|money:request.event.currency }}</td>
                <td class="text-right flip">{{ t.full_tax_value|money:request.event.currency }}</td>
@@ -64,8 +66,8 @@
        <td>
            <strong>{% trans "Sum" %}</strong>
        </td>
-        <td>
-        </td>
+        <td></td>
+        <td></td>
        <td></td>
        <td class="text-right flip">
            <strong>
@@ -46,7 +46,7 @@
                                        {% trans "active" %}
                                    {% endif %}
                                </dd>
-                                <dt>{% trans "E-mail" %}</dt>
+                                <dt>{% trans "Email" %}</dt>
                                <dd>
                                    {{ customer.email|default_if_none:"" }}
                                    {% if customer.email and not customer.provider %}
@@ -294,6 +294,71 @@
                        <legend>{% trans "Invoices" %}</legend>
                        {% bootstrap_field sform.invoice_regenerate_allowed layout="control" %}
                    </fieldset>
+                    {% if domain_formset %}
+                        <fieldset>
+                            <legend>{% trans "Domains" %}</legend>
+                            <div class="alert alert-warning">
+                                {% trans "This dialog is intended for advanced users." %}
+                                {% trans "The domain needs to be configured on your webserver before it can be used here." %}
+                            </div>
+                            <div class="formset" data-formset data-formset-prefix="{{ domain_formset.prefix }}">
+                                {{ domain_formset.management_form }}
+                                {% bootstrap_formset_errors domain_formset %}
+                                <div data-formset-body>
+                                    {% for form in domain_formset %}
+                                        <div class="row formset-row" data-formset-form>
+                                            <div class="sr-only">
+                                                {{ form.id }}
+                                                {% bootstrap_field form.DELETE form_group_class="" layout="inline" %}
+                                            </div>
+                                            <div class="col-md-4">
+                                                {% bootstrap_field form.domainname layout='' form_group_class="" %}
+                                                {% bootstrap_form_errors form %}
+                                            </div>
+                                            <div class="col-md-3">
+                                                {% bootstrap_field form.mode layout='' form_group_class="" %}
+                                            </div>
+                                            <div class="col-md-3">
+                                                {% bootstrap_field form.event layout='' form_group_class="" %}
+                                            </div>
+                                            <div class="col-md-2 text-right flip">
+                                                <label aria-hidden="true">&nbsp;</label><br>
+                                                <button type="button" class="btn btn-danger" data-formset-delete-button>
+                                                    <i class="fa fa-trash"></i></button>
+                                            </div>
+                                        </div>
+                                    {% endfor %}
+                                </div>
+                                <script type="form-template" data-formset-empty-form>
+                                    {% escapescript %}
+                                        <div class="row formset-row" data-formset-form>
+                                            <div class="sr-only">
+                                                {{ domain_formset.empty_form.id }}
+                                                {% bootstrap_field domain_formset.empty_form.DELETE form_group_class="" layout="inline" %}
+                                            </div>
+                                            <div class="col-md-4">
+                                                {% bootstrap_field domain_formset.empty_form.domainname layout='' form_group_class="" %}
+                                            </div>
+                                            <div class="col-md-3">
+                                                {% bootstrap_field domain_formset.empty_form.mode layout='' form_group_class="" %}
+                                            </div>
+                                            <div class="col-md-3">
+                                                {% bootstrap_field domain_formset.empty_form.event layout='' form_group_class="" %}
+                                            </div>
+                                            <div class="col-md-2 text-right flip">
+                                                <label aria-hidden="true">&nbsp;</label><br>
+                                                <button type="button" class="btn btn-danger" data-formset-delete-button>
+                                                    <i class="fa fa-trash"></i></button>
+                                            </div>
+                                        </div>
+                                    {% endescapescript %}
+                                </script>
+                                <p>
+                                    <button type="button" class="btn btn-default" data-formset-add>
+                                        <i class="fa fa-plus"></i> {% trans "Add domain" %}</button>
+                                </p>
+                        </fieldset>
+                    {% endif %}
                </div>
                <div class="form-group submit-group">
                    <button type="submit" class="btn btn-primary btn-save">
@@ -8,7 +8,7 @@
 {% endblock %}
 {% block title %}{% trans "Organizer" %}{% endblock %}
 {% block content %}
-    <h1>{% trans "E-mail settings" %}</h1>
+    <h1>{% trans "Email settings" %}</h1>

    <form action="" method="post" class="form-horizontal" enctype="multipart/form-data"
          mail-preview-url="{% url "control:organizer.settings.mail.preview" organizer=request.organizer.slug %}">
@@ -55,7 +55,7 @@
                {% bootstrap_field form.mail_bcc layout="control" %}
            </fieldset>
            <fieldset>
-                <legend>{% trans "E-mail content" %}</legend>
+                <legend>{% trans "Email content" %}</legend>
                <div class="panel-group" id="questions_group">
                    {% blocktrans asvar title_customer_registration %}Customer account registration{% endblocktrans %}
                    {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="customer_registration" title=title_customer_registration items="mail_subject_customer_registration,mail_text_customer_registration" %}
@@ -54,7 +54,7 @@
                <thead>
                <tr>
                    <th>{% trans "Notification type" %}</th>
-                    <th class="text-center">{% trans "E-Mail notification" %}</th>
+                    <th class="text-center">{% trans "Email notification" %}</th>
                </tr>
                </thead>
                <tbody>
@@ -39,7 +39,7 @@
        <thead>
        <tr>
            <th>
-                {% trans "E-mail address" %}
+                {% trans "Email address" %}
                <a href="?{% url_replace request 'ordering' '-email' %}"><i class="fa fa-caret-down"></i></a>
                <a href="?{% url_replace request 'ordering' 'email' %}"><i class="fa fa-caret-up"></i></a>
            </th>
@@ -343,7 +343,7 @@ class Forgot(TemplateView):
                logger.warning('Backend password reset for unregistered e-mail \"' + email + '\" requested.')

            except SendMailException:
-                logger.exception('Sending password reset e-mail to \"' + email + '\" failed.')
+                logger.exception('Sending password reset email to \"' + email + '\" failed.')

            except RepeatedResetDenied:
                pass
@@ -354,10 +354,10 @@ class Forgot(TemplateView):

            finally:
                if has_redis:
-                    messages.info(request, _('If the address is registered to valid account, then we have sent you an e-mail containing further instructions. '
+                    messages.info(request, _('If the address is registered to valid account, then we have sent you an email containing further instructions. '
                                             'Please note that we will send at most one email every 24 hours.'))
                else:
-                    messages.info(request, _('If the address is registered to valid account, then we have sent you an e-mail containing further instructions.'))
+                    messages.info(request, _('If the address is registered to valid account, then we have sent you an email containing further instructions.'))

                return redirect('control:auth.forgot')
        else:
@@ -49,6 +49,7 @@ from django.views.generic import FormView, ListView, TemplateView
 from i18nfield.strings import LazyI18nString

 from pretix.api.views.checkin import _redeem_process
+from pretix.base.media import MEDIA_TYPES
 from pretix.base.models import Checkin, Order, OrderPosition
 from pretix.base.models.checkin import CheckinList
 from pretix.base.services.checkin import (
@@ -81,9 +82,7 @@ class CheckInListQueryMixin:
            position_id=OuterRef('pk'),
            list_id=self.list.pk,
            type=Checkin.TYPE_ENTRY
-        ).order_by().values('position_id').annotate(
-            m=Max('datetime')
-        ).values('m')
+        ).order_by('-datetime').values('position_id')
        cqs_exit = Checkin.objects.filter(
            position_id=OuterRef('pk'),
            list_id=self.list.pk,
@@ -103,7 +102,7 @@ class CheckInListQueryMixin:
            status_q,
            order__event=self.request.event,
        ).annotate(
-            last_entry=Subquery(cqs),
+            last_entry=Subquery(cqs[:1].values('datetime')),
            last_exit=Subquery(cqs_exit),
            auto_checked_in=Exists(
                Checkin.objects.filter(
@@ -112,7 +111,8 @@ class CheckInListQueryMixin:
                    list_id=self.list.pk,
                    auto_checked_in=True
                )
-            )
+            ),
+            last_entry_source_type=Subquery(cqs[:1].values('raw_source_type'))
        ).select_related(
            'item', 'variation', 'order', 'addon_to'
        ).prefetch_related(
@@ -157,6 +157,7 @@ class CheckInListShow(EventPermissionRequiredMixin, PaginationMixin, CheckInList

    def get_context_data(self, **kwargs):
        ctx = super().get_context_data(**kwargs)
+        ctx['media_types'] = MEDIA_TYPES
        ctx['checkinlist'] = self.list
        if self.request.event.has_subevents:
            ctx['seats'] = (
@@ -497,6 +498,7 @@ class CheckinListView(EventPermissionRequiredMixin, PaginationMixin, ListView):
    def get_context_data(self, **kwargs):
        ctx = super().get_context_data()
        ctx['filter_form'] = self.filter_form
+        ctx['media_types'] = MEDIA_TYPES
        return ctx


@@ -38,6 +38,7 @@ from zoneinfo import ZoneInfo

 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
+from django.contrib.humanize.templatetags.humanize import intcomma
 from django.db.models import (
    Count, IntegerField, Max, Min, OuterRef, Prefetch, Q, Subquery, Sum,
 )
@@ -47,7 +48,6 @@ from django.http import JsonResponse
 from django.shortcuts import render
 from django.template.loader import get_template
 from django.urls import reverse
-from django.utils import formats
 from django.utils.formats import date_format
 from django.utils.html import escape
 from django.utils.timezone import now
@@ -67,6 +67,7 @@ from pretix.control.signals import (
 from pretix.helpers.daterange import daterange

 from ...base.models.orders import CancellationRequest
+from ...base.templatetags.money import money_filter
 from ..logdisplay import OVERVIEW_BANLIST

 NUM_WIDGET = '<div class="numwidget"><span class="num">{num}</span><span class="text">{text}</span></div>'
@@ -111,7 +112,7 @@ def base_widgets(sender, subevent=None, lazy=False, **kwargs):

    return [
        {
-            'content': None if lazy else NUM_WIDGET.format(num=tickc, text=_('Attendees (ordered)')),
+            'content': None if lazy else NUM_WIDGET.format(num=intcomma(tickc), text=_('Attendees (ordered)')),
            'lazy': 'attendees-ordered',
            'display_size': 'small',
            'priority': 100,
@@ -121,7 +122,7 @@ def base_widgets(sender, subevent=None, lazy=False, **kwargs):
            }) + ('?subevent={}'.format(subevent.pk) if subevent else '')
        },
        {
-            'content': None if lazy else NUM_WIDGET.format(num=paidc, text=_('Attendees (paid)')),
+            'content': None if lazy else NUM_WIDGET.format(num=intcomma(paidc), text=_('Attendees (paid)')),
            'lazy': 'attendees-paid',
            'display_size': 'small',
            'priority': 100,
@@ -132,7 +133,9 @@ def base_widgets(sender, subevent=None, lazy=False, **kwargs):
        },
        {
            'content': None if lazy else NUM_WIDGET.format(
-                num=formats.localize(round_decimal(rev, sender.currency)), text=_('Total revenue ({currency})').format(currency=sender.currency)),
+                num=money_filter(round_decimal(rev, sender.currency), sender.currency, hide_currency=True),
+                text=_('Total revenue ({currency})').format(currency=sender.currency)
+            ),
            'lazy': 'total-revenue',
            'display_size': 'small',
            'priority': 100,
@@ -207,7 +210,7 @@ def waitinglist_widgets(sender, subevent=None, lazy=False, **kwargs):

        widgets.append({
            'content': None if lazy else NUM_WIDGET.format(
-                num=str(happy), text=_('available to give to people on waiting list')
+                num=intcomma(happy), text=_('available to give to people on waiting list')
            ),
            'lazy': 'waitinglist-avail',
            'priority': 50,
@@ -217,7 +220,7 @@ def waitinglist_widgets(sender, subevent=None, lazy=False, **kwargs):
            })
        })
        widgets.append({
-            'content': None if lazy else NUM_WIDGET.format(num=str(wles.count()), text=_('total waiting list length')),
+            'content': None if lazy else NUM_WIDGET.format(num=intcomma(wles.count()), text=_('total waiting list length')),
            'lazy': 'waitinglist-length',
            'display_size': 'small',
            'priority': 50,
@@ -245,7 +248,7 @@ def quota_widgets(sender, subevent=None, lazy=False, **kwargs):
            status, left = qa.results[q] if q in qa.results else q.availability(allow_cache=True)
        widgets.append({
            'content': None if lazy else NUM_WIDGET.format(
-                num='{}/{}'.format(left, q.size) if q.size is not None else '\u221e',
+                num='{}/{}'.format(intcomma(left), intcomma(q.size)) if q.size is not None else '\u221e',
                text=_('{quota} left').format(quota=escape(q.name))
            ),
            'lazy': 'quota-{}'.format(q.pk),
@@ -297,7 +300,7 @@ def checkin_widget(sender, subevent=None, lazy=False, **kwargs):
    for cl in qs:
        widgets.append({
            'content': None if lazy else NUM_WIDGET.format(
-                num='{}/{}'.format(cl.inside_count, cl.position_count),
+                num='{}/{}'.format(intcomma(cl.inside_count), intcomma(cl.position_count)),
                text=_('Present – {list}').format(list=escape(cl.name))
            ),
            'lazy': 'checkin-{}'.format(cl.pk),
@@ -62,7 +62,7 @@ from django.http import (
 from django.shortcuts import get_object_or_404, redirect
 from django.urls import reverse
 from django.utils.functional import cached_property
-from django.utils.html import escape
+from django.utils.html import conditional_escape
 from django.utils.http import url_has_allowed_host_and_scheme
 from django.utils.timezone import now
 from django.utils.translation import gettext, gettext_lazy as _, gettext_noop
@@ -100,9 +100,12 @@ from ...base.models.items import (
    Item, ItemCategory, ItemMetaProperty, Question, Quota,
 )
 from ...base.services.mail import prefix_subject
+from ...base.services.placeholders import get_sample_context
 from ...base.settings import LazyI18nStringList
 from ...helpers.compat import CompatDeleteView
-from ...helpers.format import format_map
+from ...helpers.format import (
+    PlainHtmlAlternativeString, SafeFormatter, format_map,
+)
 from ..logdisplay import OVERVIEW_BANLIST
 from . import CreateView, PaginationMixin, UpdateView

@@ -239,7 +242,6 @@ class EventUpdate(DecoupleMixin, EventSettingsViewMixin, EventPermissionRequired
        kwargs = super().get_form_kwargs()
        if self.request.user.has_active_staff_session(self.request.session.session_key):
            kwargs['change_slug'] = True
-            kwargs['domain'] = True
        return kwargs

    def post(self, request, *args, **kwargs):
@@ -717,20 +719,7 @@ class MailSettingsPreview(EventPermissionRequiredMixin, View):

    # get all supported placeholders with dummy values
    def placeholders(self, item):
-        ctx = {}
-        for p in get_available_placeholders(self.request.event, MailSettingsForm.base_context[item]).values():
-            s = str(p.render_sample(self.request.event))
-            if s.strip().startswith('* '):
-                ctx[p.identifier] = '<div class="placeholder" title="{}">{}</div>'.format(
-                    _('This value will be replaced based on dynamic parameters.'),
-                    markdown_compile_email(s)
-                )
-            else:
-                ctx[p.identifier] = '<span class="placeholder" title="{}">{}</span>'.format(
-                    _('This value will be replaced based on dynamic parameters.'),
-                    escape(s)
-                )
-        return ctx
+        return get_sample_context(self.request.event, MailSettingsForm.base_context[item])

    def post(self, request, *args, **kwargs):
        preview_item = request.POST.get('item', '')
@@ -752,9 +741,15 @@ class MailSettingsPreview(EventPermissionRequiredMixin, View):
                                    bleach.clean(v), self.placeholders(preview_item), raise_on_missing=True
                                ), highlight=True)
                            else:
-                                msgs[self.supported_locale[idx]] = markdown_compile_email(
-                                    format_map(v, self.placeholders(preview_item), raise_on_missing=True)
+                                placeholders = self.placeholders(preview_item)
+                                msgs[self.supported_locale[idx]] = format_map(
+                                    markdown_compile_email(
+                                        format_map(v, placeholders, raise_on_missing=True)
+                                    ),
+                                    placeholders,
+                                    mode=SafeFormatter.MODE_RICH_TO_HTML,
                                )
+
                        except ValueError:
                            msgs[self.supported_locale[idx]] = '<div class="alert alert-danger">{}</div>'.format(
                                PlaceholderValidator.error_message)
@@ -777,13 +772,18 @@ class MailSettingsRendererPreview(MailSettingsPreview):
    # get all supported placeholders with dummy values
    def placeholders(self, item):
        ctx = {}
-        for p in get_available_placeholders(self.request.event, MailSettingsForm.base_context[item]).values():
-            ctx[p.identifier] = escape(str(p.render_sample(self.request.event)))
+        for p in get_available_placeholders(self.request.event, MailSettingsForm.base_context[item], rich=True).values():
+            sample = p.render_sample(self.request.event)
+            if isinstance(sample, PlainHtmlAlternativeString):
+                ctx[p.identifier] = sample
+            else:
+                ctx[p.identifier] = conditional_escape(sample)
        return ctx

    def get(self, request, *args, **kwargs):
        v = str(request.event.settings.mail_text_order_placed)
-        v = format_map(v, self.placeholders('mail_text_order_placed'))
+        context = self.placeholders('mail_text_order_placed')
+        v = format_map(v, context)
        renderers = request.event.get_html_mail_renderers()
        if request.GET.get('renderer') in renderers:
            with rolledback_transaction():
@@ -801,13 +801,14 @@ class MailSettingsRendererPreview(MailSettingsPreview):
                    str(request.event.settings.mail_text_signature),
                    gettext('Your order: %(code)s') % {'code': order.code},
                    order,
-                    position=None
+                    position=None,
+                    context=context,
                )
                r = HttpResponse(v, content_type='text/html')
                r._csp_ignore = True
                return r
        else:
-            raise Http404(_('Unknown e-mail renderer.'))
+            raise Http404(_('Unknown email renderer.'))


 class TicketSettingsPreview(EventPermissionRequiredMixin, View):
@@ -1196,17 +1197,22 @@ class TaxCreate(EventSettingsViewMixin, EventPermissionRequiredMixin, CreateView

    def post(self, request, *args, **kwargs):
        self.object = None
-        form = self.get_form()
+        form = self.form
        if form.is_valid() and self.formset.is_valid():
            return self.form_valid(form)
        else:
            return self.form_invalid(form)

+    @cached_property
+    def form(self):
+        return self.get_form()
+
    @cached_property
    def formset(self):
        return TaxRuleLineFormSet(
            data=self.request.POST if self.request.method == "POST" else None,
            event=self.request.event,
+            parent_form=self.form,
        )

    def get_context_data(self, **kwargs):
@@ -1247,17 +1253,22 @@ class TaxUpdate(EventSettingsViewMixin, EventPermissionRequiredMixin, UpdateView

    def post(self, request, *args, **kwargs):
        self.object = self.get_object(self.get_queryset())
-        form = self.get_form()
+        form = self.form
        if form.is_valid() and self.formset.is_valid():
            return self.form_valid(form)
        else:
            return self.form_invalid(form)

+    @cached_property
+    def form(self):
+        return self.get_form()
+
    @cached_property
    def formset(self):
        return TaxRuleLineFormSet(
            data=self.request.POST if self.request.method == "POST" else None,
            event=self.request.event,
+            parent_form=self.form,
            initial=json.loads(self.object.custom_rules) if self.object.custom_rules else []
        )

@@ -134,7 +134,7 @@ from pretix.control.signals import order_search_forms
 from pretix.control.views import PaginationMixin
 from pretix.helpers import OF_SELF
 from pretix.helpers.compat import CompatDeleteView
-from pretix.helpers.format import format_map
+from pretix.helpers.format import SafeFormatter, format_map
 from pretix.helpers.safedownload import check_token
 from pretix.presale.signals import question_form_fields

@@ -479,7 +479,7 @@ class OrderView(EventPermissionRequiredMixin, DetailView):
    def get_context_data(self, **kwargs):
        ctx = super().get_context_data(**kwargs)
        ctx['can_generate_invoice'] = invoice_qualified(self.order) and (
-            self.request.event.settings.invoice_generate in ('admin', 'user', 'paid', 'True')
+            self.request.event.settings.invoice_generate in ('admin', 'user', 'paid', 'user_paid', 'True')
        ) and self.order.status in (Order.STATUS_PAID, Order.STATUS_PENDING) and (
            not self.order.invoices.exists()
            or self.order.invoices.filter(is_cancellation=True).count() >= self.order.invoices.filter(is_cancellation=False).count()
@@ -1584,7 +1584,7 @@ class OrderInvoiceCreate(OrderView):
                order.status in (Order.STATUS_PAID, Order.STATUS_PENDING)
                and order.invoices.filter(is_cancellation=True).count() >= order.invoices.filter(is_cancellation=False).count()
            )
-            if self.request.event.settings.get('invoice_generate') not in ('admin', 'user', 'paid', 'True') or not invoice_qualified(order):
+            if self.request.event.settings.get('invoice_generate') not in ('admin', 'user', 'paid', 'user_paid', 'True') or not invoice_qualified(order):
                messages.error(self.request, _('You cannot generate an invoice for this order.'))
            elif has_inv:
                messages.error(self.request, _('An invoice for this order already exists.'))
@@ -2351,7 +2351,7 @@ class OrderSendMail(EventPermissionRequiredMixin, OrderViewMixin, FormView):
                'subject': mark_safe(_('Subject: {subject}').format(
                    subject=prefix_subject(order.event, escape(email_subject), highlight=True)
                )),
-                'html': markdown_compile_email(email_content)
+                'html': format_map(markdown_compile_email(email_content), email_context, mode=SafeFormatter.MODE_RICH_TO_HTML)
            }
            return self.get(self.request, *self.args, **self.kwargs)
        else:
@@ -104,11 +104,11 @@ from pretix.control.forms.organizer import (
    CustomerCreateForm, CustomerUpdateForm, DeviceBulkEditForm, DeviceForm,
    EventMetaPropertyAllowedValueFormSet, EventMetaPropertyForm, GateForm,
    GiftCardAcceptanceInviteForm, GiftCardCreateForm, GiftCardUpdateForm,
-    MailSettingsForm, MembershipTypeForm, MembershipUpdateForm,
-    OrganizerDeleteForm, OrganizerFooterLinkFormset, OrganizerForm,
-    OrganizerSettingsForm, OrganizerUpdateForm, ReusableMediumCreateForm,
-    ReusableMediumUpdateForm, SalesChannelForm, SSOClientForm, SSOProviderForm,
-    TeamForm, WebHookForm,
+    KnownDomainFormset, MailSettingsForm, MembershipTypeForm,
+    MembershipUpdateForm, OrganizerDeleteForm, OrganizerFooterLinkFormset,
+    OrganizerForm, OrganizerSettingsForm, OrganizerUpdateForm,
+    ReusableMediumCreateForm, ReusableMediumUpdateForm, SalesChannelForm,
+    SSOClientForm, SSOProviderForm, TeamForm, WebHookForm,
 )
 from pretix.control.forms.rrule import RRuleForm
 from pretix.control.logdisplay import OVERVIEW_BANLIST
@@ -122,7 +122,7 @@ from pretix.control.views.mailsetup import MailSettingsSetupView
 from pretix.helpers import OF_SELF, GroupConcat
 from pretix.helpers.compat import CompatDeleteView
 from pretix.helpers.dicts import merge_dicts
-from pretix.helpers.format import format_map
+from pretix.helpers.format import SafeFormatter, format_map
 from pretix.helpers.urls import build_absolute_uri as build_global_uri
 from pretix.multidomain.urlreverse import build_absolute_uri
 from pretix.presale.forms.customer import TokenGenerator
@@ -357,9 +357,10 @@ class MailSettingsPreview(OrganizerPermissionRequiredMixin, View):
                                highlight=True,
                            )
                        else:
-                            msgs[self.supported_locale[idx]] = markdown_compile_email(
-                                format_map(v, self.placeholders(preview_item))
-                            )
+                            placeholders = self.placeholders(preview_item)
+                            msgs[self.supported_locale[idx]] = format_map(markdown_compile_email(
+                                format_map(v, placeholders)
+                            ), placeholders, mode=SafeFormatter.MODE_RICH_TO_HTML)

        return JsonResponse({
            'item': preview_item,
@@ -447,6 +448,10 @@ class OrganizerUpdate(OrganizerPermissionRequiredMixin, UpdateView):
    def get_object(self, queryset=None) -> Organizer:
        return self.object

+    @cached_property
+    def domain_config(self):
+        return self.request.user.has_active_staff_session(self.request.session.session_key)
+
    @cached_property
    def sform(self):
        return OrganizerSettingsForm(
@@ -461,6 +466,8 @@ class OrganizerUpdate(OrganizerPermissionRequiredMixin, UpdateView):
        context = super().get_context_data(*args, **kwargs)
        context['sform'] = self.sform
        context['footer_links_formset'] = self.footer_links_formset
+        if self.domain_config:
+            context['domain_formset'] = self.domain_formset
        return context

    @transaction.atomic
@@ -483,6 +490,8 @@ class OrganizerUpdate(OrganizerPermissionRequiredMixin, UpdateView):
            self.request.organizer.log_action('pretix.organizer.footerlinks.changed', user=self.request.user, data={
                'data': self.footer_links_formset.cleaned_data
            })
+        if self.domain_config and self.domain_formset.has_changed():
+            self._save_domain_config()
        if form.has_changed():
            self.request.organizer.log_action(
                'pretix.organizer.changed',
@@ -493,10 +502,22 @@ class OrganizerUpdate(OrganizerPermissionRequiredMixin, UpdateView):
        messages.success(self.request, _('Your changes have been saved.'))
        return super().form_valid(form)

+    def _save_domain_config(self):
+        for form in self.domain_formset.initial_forms:
+            if form.instance.pk and form.has_changed():
+                self.object.domains.get(pk=form.instance.pk).log_delete(self.request.user)
+        self.domain_formset.save()
+        for new_obj in self.domain_formset.new_objects:
+            new_obj.log_create(self.request.user)
+        for ch_obj, form in self.domain_formset.changed_objects:
+            ch_obj.log_create(self.request.user)
+        self.request.organizer.cache.clear()
+        for ev in self.request.organizer.events.all():
+            ev.cache.clear()
+
    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        if self.request.user.has_active_staff_session(self.request.session.session_key):
-            kwargs['domain'] = True
            kwargs['change_slug'] = True
        return kwargs

@@ -508,7 +529,7 @@ class OrganizerUpdate(OrganizerPermissionRequiredMixin, UpdateView):
    def post(self, request, *args, **kwargs):
        self.object = self.get_object()
        form = self.get_form()
-        if form.is_valid() and self.sform.is_valid() and self.footer_links_formset.is_valid():
+        if form.is_valid() and self.sform.is_valid() and self.footer_links_formset.is_valid() and (not self.domain_config or self.domain_formset.is_valid()):
            return self.form_valid(form)
        else:
            return self.form_invalid(form)
@@ -519,6 +540,11 @@ class OrganizerUpdate(OrganizerPermissionRequiredMixin, UpdateView):
                                          organizer=self.object,
                                          prefix="footer-links", instance=self.object)

+    @cached_property
+    def domain_formset(self):
+        return KnownDomainFormset(self.request.POST if self.request.method == "POST" else None, prefix="domains",
+                                  instance=self.object, organizer=self.object)
+
    def save_footer_links_formset(self, obj):
        self.footer_links_formset.save()

@@ -145,7 +145,7 @@ class UserResetView(AdministratorPermissionRequiredMixin, RecentAuthenticationRe

        self.object.log_action('pretix.control.auth.user.forgot_password.mail_sent',
                               user=request.user)
-        messages.success(request, _('We sent out an e-mail containing further instructions.'))
+        messages.success(request, _('We sent out an email containing further instructions.'))
        return redirect(self.get_success_url())

    def get_success_url(self):
@@ -50,7 +50,7 @@ from django.http import (
 from django.shortcuts import redirect, render
 from django.urls import resolve, reverse
 from django.utils.functional import cached_property
-from django.utils.html import escape, format_html
+from django.utils.html import format_html
 from django.utils.safestring import mark_safe
 from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _
@@ -59,12 +59,12 @@ from django.views.generic import (
 )
 from django_scopes import scopes_disabled

-from pretix.base.email import get_available_placeholders
 from pretix.base.models import (
    CartPosition, LogEntry, Voucher, WaitingListEntry,
 )
 from pretix.base.models.vouchers import generate_codes
 from pretix.base.services.mail import prefix_subject
+from pretix.base.services.placeholders import get_sample_context
 from pretix.base.services.vouchers import vouchers_send
 from pretix.base.templatetags.rich_text import markdown_compile_email
 from pretix.base.views.tasks import AsyncFormView
@@ -74,7 +74,7 @@ from pretix.control.permissions import EventPermissionRequiredMixin
 from pretix.control.signals import voucher_form_class
 from pretix.control.views import PaginationMixin
 from pretix.helpers.compat import CompatDeleteView
-from pretix.helpers.format import format_map
+from pretix.helpers.format import SafeFormatter, format_map
 from pretix.helpers.models import modelcopy
 from pretix.multidomain.urlreverse import build_absolute_uri

@@ -549,22 +549,10 @@ class VoucherBulkMailPreview(EventPermissionRequiredMixin, View):

    # get all supported placeholders with dummy values
    def placeholders(self, item):
-        ctx = {}
        base_ctx = ['event', 'name']
        if item == 'send_message':
            base_ctx += ['voucher_list']
-        for p in get_available_placeholders(self.request.event, base_ctx).values():
-            s = str(p.render_sample(self.request.event))
-            if s.strip().startswith('* ') or s.startswith('  '):
-                ctx[p.identifier] = '<div class="placeholder" title="{}">{}</div>'.format(
-                    _('This value will be replaced based on dynamic parameters.'),
-                    markdown_compile_email(s)
-                )
-            else:
-                ctx[p.identifier] = '<span class="placeholder" title="{}">{}</span>'.format(
-                    _('This value will be replaced based on dynamic parameters.'),
-                    escape(s)
-                )
+        ctx = get_sample_context(self.request.event, base_ctx)
        return self.SafeDict(ctx)

    def post(self, request, *args, **kwargs):
@@ -579,9 +567,10 @@ class VoucherBulkMailPreview(EventPermissionRequiredMixin, View):
                highlight=True
            )
        else:
-            msgs["all"] = markdown_compile_email(
-                format_map(request.POST.get(preview_item), self.placeholders(preview_item))
-            )
+            placeholders = self.placeholders(preview_item)
+            msgs["all"] = format_map(markdown_compile_email(
+                format_map(request.POST.get(preview_item), placeholders)
+            ), placeholders, mode=SafeFormatter.MODE_RICH_TO_HTML)

        return JsonResponse({
            'item': preview_item,
@@ -304,7 +304,7 @@ class WaitingListView(EventPermissionRequiredMixin, WaitingListQuerySetMixin, Pa
        writer = csv.writer(output, quoting=csv.QUOTE_NONNUMERIC, delimiter=",")

        headers = [
-            _('Name'), _('E-mail address'), _('Phone number'), _('Product'), _('On list since'), _('Status'), _('Voucher code'),
+            _('Name'), _('Email address'), _('Phone number'), _('Product'), _('On list since'), _('Status'), _('Voucher code'),
            _('Language'), _('Priority')
        ]
        if self.request.event.has_subevents:
@@ -25,14 +25,29 @@ from string import Formatter
 logger = logging.getLogger(__name__)


+class PlainHtmlAlternativeString:
+    def __init__(self, plain, html, is_block=False):
+        self.plain = plain
+        self.html = html
+        self.is_block = is_block
+
+    def __repr__(self):
+        return f"PlainHtmlAlternativeString('{self.plain}', '{self.html}')"
+
+
 class SafeFormatter(Formatter):
    """
    Customized version of ``str.format`` that (a) behaves just like ``str.format_map`` and
    (b) does not allow any unwanted shenanigans like attribute access or format specifiers.
    """
-    def __init__(self, context, raise_on_missing=False):
+    MODE_IGNORE_RICH = 0
+    MODE_RICH_TO_PLAIN = 1
+    MODE_RICH_TO_HTML = 2
+
+    def __init__(self, context, raise_on_missing=False, mode=MODE_IGNORE_RICH):
        self.context = context
        self.raise_on_missing = raise_on_missing
+        self.mode = mode

    def get_field(self, field_name, args, kwargs):
        return self.get_value(field_name, args, kwargs), field_name
@@ -40,14 +55,22 @@ class SafeFormatter(Formatter):
    def get_value(self, key, args, kwargs):
        if not self.raise_on_missing and key not in self.context:
            return '{' + str(key) + '}'
-        return self.context[key]
+        r = self.context[key]
+        if isinstance(r, PlainHtmlAlternativeString):
+            if self.mode == self.MODE_IGNORE_RICH:
+                return '{' + str(key) + '}'
+            elif self.mode == self.MODE_RICH_TO_PLAIN:
+                return r.plain
+            elif self.mode == self.MODE_RICH_TO_HTML:
+                return r.html
+        return r

    def format_field(self, value, format_spec):
-        # Ignore format _spec
+        # Ignore format_spec
        return super().format_field(value, '')


-def format_map(template, context, raise_on_missing=False):
+def format_map(template, context, raise_on_missing=False, mode=SafeFormatter.MODE_IGNORE_RICH):
    if not isinstance(template, str):
        template = str(template)
-    return SafeFormatter(context, raise_on_missing).format(template)
+    return SafeFormatter(context, raise_on_missing, mode=mode).format(template)
--- a/Show More
+++ b/Show More