Merge pull request #373 from itpp-labs/13.0-mail_multi_website-publish

commit is created by 👷‍♂️ Merge Bot: https://odoo-devops.readthedocs.io/en/latest/git/github-merge-bot.html

mail_multi_website/ ⇐ ⇐ ⇐/README.rst

@@ -1,14 +0,0 @@
-=====================
- Multi-Brand Mailing
-=====================
-
-Mail-related stuff for multi-website support
-
-Module is available at Odoo Apps Store:
-https://www.odoo.com/apps/modules/13.0/mail_multi_website/
-
-    We do love FOSS, but sometimes we need to eat ¯\\_(ツ)_/¯
-
-    Please consider buying the module and get karma and support in return
-
-    `IT Projects Labs Team <https://itpp.dev/>`__

mail_multi_website/README.rst

@@ -0,0 +1,67 @@
+.. image:: https://img.shields.io/badge/license-MIT-blue.svg
+   :target: https://opensource.org/licenses/MIT
+   :alt: License: MIT
+
+=====================
+ Multi-Brand Mailing
+=====================
+
+Mail-related stuff for multi-website support
+
+* Makes following field in ``res.users`` website-dependent:
+
+  * ``email``
+  * ``signature``
+
+* Makes following fields in ``mail.template`` website-dependent:
+
+  * ``body_html``
+  * ``mail_server_id``
+  * ``report_template``
+
+* Overrides ``mail.template``'s ``render_template`` method to add ``website``
+  variable. It may cause incompatibility with other modules that redefine that
+  method too.
+
+Roadmap
+=======
+
+* ``body_html`` becomes untranslatable after module installation
+
+Credits
+=======
+
+Contributors
+------------
+* `Ivan Yelizariev <https://it-projects.info/team/yelizariev>`__
+
+Sponsors
+--------
+* `e-thos SSII <http://www.e-thos.fr/>`__
+
+Maintainers
+-----------
+* `IT-Projects LLC <https://it-projects.info>`__
+
+      To get a guaranteed support
+      you are kindly requested to purchase the module
+      at `odoo apps store <https://apps.odoo.com/apps/modules/13.0/mail_multi_website/>`__.
+
+      Thank you for understanding!
+
+      `IT-Projects Team <https://www.it-projects.info/team>`__
+
+Further information
+===================
+
+Demo: http://runbot.it-projects.info/demo/mail-addons/13.0
+
+HTML Description: https://apps.odoo.com/apps/modules/13.0/mail_multi_website/
+
+Usage instructions: `<doc/index.rst>`_
+
+Changelog: `<doc/changelog.rst>`_
+
+Notifications on updates: `via Atom <https://github.com/it-projects-llc/mail-addons/commits/13.0/mail_multi_website.atom>`_, `by Email <https://blogtrottr.com/?subscribe=https://github.com/it-projects-llc/mail-addons/commits/13.0/mail_multi_website.atom>`_
+
+Tested on Odoo 13.0 ca67c83e8d36ececaf97a7579c3ff2529b3e227c

mail_multi_website/__init__.py

@@ -0,0 +1,43 @@
+# Copyright 2018 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+from . import models
+from . import wizard
+from .tests import test_mail_model
+
+
+def post_init_hook(cr, registry):
+    from odoo import api, SUPERUSER_ID
+
+    env = api.Environment(cr, SUPERUSER_ID, {})
+
+    env.cr.execute("ALTER TABLE res_users ADD COLUMN email VARCHAR")
+
+    # fill new email column with values from partner
+    for user in env["res.users"].with_context(active_test=False).search([]):
+        email = user.partner_id.email
+        if email:
+            user._force_default("email", email)
+
+
+def uninstall_hook(cr, registry):
+    from odoo import api, SUPERUSER_ID
+
+    env = api.Environment(cr, SUPERUSER_ID, {})
+
+    # remove properties
+    field_ids = [
+        env.ref("base.field_res_users__email").id,
+        env.ref("base.field_res_users__signature").id,
+        env.ref("mail.field_mail_template__body_html").id,
+        env.ref("mail.field_mail_template__mail_server_id").id,
+        env.ref("mail.field_mail_template__report_template").id,
+    ]
+    env["ir.property"].search([("fields_id", "in", field_ids)]).unlink()
+
+    # copy emails from user to partner
+    cr.execute("SELECT partner_id,email FROM res_users")
+    for partner_id, default_email in cr.fetchall():
+        env["res.partner"].browse(partner_id).email = default_email
+
+    # email field is computed (related) and not needed if mail_multi_website is not installed
+    env.cr.execute("ALTER TABLE res_users DROP COLUMN email")

mail_multi_website/__manifest__.py

@@ -0,0 +1,45 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# Copyright 2018 Kolushov Alexandr <https://it-projects.info/team/KolushovAlexandr>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+{
+    "name": """Multi-Brand Mailing""",
+    "summary": """Use single Backend to manage several Websites""",
+    "category": "Discuss",
+    # "live_test_url": "http://apps.it-projects.info/shop/product/website-multi-company?version=11.0",
+    "images": ["images/main.jpg"],
+    "version": "13.0.2.0.0",
+    "application": False,
+    "author": "IT-Projects LLC, Ivan Yelizariev",
+    "support": "apps@itpp.dev",
+    "website": "https://twitter.com/OdooFree",
+    "license": "OPL-1",
+    "price": 115.00,
+    "currency": "EUR",
+    "depends": [
+        "ir_config_parameter_multi_company",
+        "web_website",
+        "mail",
+        "test_mail",
+    ],
+    "external_dependencies": {"python": [], "bin": []},
+    "data": ["views/website_views.xml"],
+    "demo": [],
+    "qweb": [],
+    "post_load": None,
+    "pre_init_hook": None,
+    "post_init_hook": "post_init_hook",
+    "uninstall_hook": "uninstall_hook",
+    "auto_install": False,
+    "installable": True,
+    # "demo_title": "Email Addresses per Website",
+    # "demo_addons": [
+    # ],
+    # "demo_addons_hidden": [
+    # ],
+    # "demo_url": "DEMO-URL",
+    # "demo_summary": "Use single Backend to manage several Websites",
+    # "demo_images": [
+    #    "images/MAIN_IMAGE",
+    # ]
+}

mail_multi_website/doc/changelog.rst

@@ -0,0 +1,13 @@
+`2.0.0`
+-------
+- **Improvement:** adapt module to latest version of ``web_website`` module
+
+`1.0.1`
+-------
+
+- **Fix:** Issue with module uninstallation
+
+`1.0.0`
+-------
+
+- **Init version**

mail_multi_website/doc/index.rst

@@ -0,0 +1,73 @@
+=====================
+ Multi-Brand Mailing
+=====================
+
+Installation
+============
+
+* `Install <https://odoo-development.readthedocs.io/en/latest/odoo/usage/install-module.html>`__ this module in a usual way
+
+Configuration
+=============
+
+
+Access to websites
+------------------
+
+* Go to menu ``[[ Settings ]] >> Users & Companies >> Users``
+* Select a user
+* Grant access ``[x] Multi Websites for Backend``
+* Configure **Allowed Websites**
+
+User's email per website
+------------------------
+
+* Refresh page if you just granted your user access to websites
+* Use top right-hand corner button with current website name to switch between websites
+* Use top right-hand corner button with user name and avatar to open
+  Preference popup. When you edit **Email** field, it will be saved as a value
+  for current website.
+
+Email template per website
+--------------------------
+
+* Refresh page if you just granted your user access to websites
+* `Activate Developer Mode <https://odoo-development.readthedocs.io/en/latest/odoo/usage/debug-mode.html>`__
+* Use top right-hand corner button with current website name to switch between websites
+* Go to menu ``[[ Settings ]] >> Technical >> Email >> Templates``
+* When you edit template, following fields will be saved as a value for current website:
+
+  * **Body**
+  * **Outgoing Mail Server**
+  * **Optional report to print and attach**
+
+* Additional variable ``website`` is available to configure rest fields (**Subject**, **From**, etc.)
+
+Note. If related record (e.g. ``sale.order``) has field ``company_id`` or ``website_id`` those values will be used instead of currently selected in Website / Company Switchers
+
+Alias domain per website
+------------------------
+
+Configure ``mail.catchall.domain`` per website. See Documentation of the module `Context-dependent values in System Parameters <https://apps.odoo.com/apps/modules/10.0/ir_config_parameter_multi_company>`__.
+
+Outgoing mails servers per website
+----------------------------------
+
+If each domain has different Outgoing Mail Server you need following adjustments
+
+* Go to menu ``[[ Website ]] >> Configuration >> Websites``
+* In each Website specify field **Outgoing Mails**
+
+Properties
+----------
+
+To review properties by website use menu ``[[ Settings ]] >> Technical >> Parameters >> Company Properties``. See **How it works** in Documentation of module `Website Switcher in Backend <https://apps.odoo.com/apps/modules/10.0/web_website>`__.
+
+Usage
+=====
+
+When you work from backend, Email for current website is used.
+
+When a user do something on website (e.g. purchase products) and some mail is sent, then email address for that website will be used (mostly Administrator's email address).
+
+When email is sent, template's value like body, subject, etc. for current values are used.

mail_multi_website/doc/src/index.html

@@ -0,0 +1,36 @@
+
+<section class="oe_container">
+    <div class="oe_row oe_spaced">
+        <div class="oe_span12">
+
+            <div class="alert alert-info oe_mt32" style="padding:0.3em 0.6em; font-size: 150%;">
+                <i class="fa fa-hand-o-right"></i><b> Key features: </b>
+                <ul class="list-unstyled">
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        Separate Mail Templates per Website
+                    </li>
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        <em>From</em> address in email has address for current Website
+                    </li>
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        <em>Reply-To</em> address in email has domain of current Website
+                    </li>
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        User's signature per Website
+                    </li>
+
+                </ul>
+            </div>
+
+        </div>
+    </div>
+</section>
+

mail_multi_website/doc/src/info.yaml

@@ -0,0 +1 @@
+slogan: Use single Backend to manage several Websites

mail_multi_website/i18n/mail_multi_website.pot

@@ -0,0 +1,123 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* mail_multi_website
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 12.0\n"
+"Report-Msgid-Bugs-To: \n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_email_template_preview__body_html
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_template__body_html
+msgid "Body"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_test_simple__company_id
+msgid "Company"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_ir_property
+msgid "Company Property"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,help:mail_multi_website.field_website__mail_server_id
+msgid "Default outgoing mail server"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_res_users__email_multi_website
+msgid "Email Multi Website"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_mail_template
+msgid "Email Templates"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_mail_thread
+msgid "Email Thread"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_mail_compose_message
+msgid "Email composition wizard"
+msgstr ""
+
+#. module: mail_multi_website
+#: code:addons/mail_multi_website/models/mail_template.py:112
+#, python-format
+msgid "Failed to render template %r using values %r"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_mail_message
+msgid "Message"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_res_users__email
+msgid "Multi Website Email"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,help:mail_multi_website.field_email_template_preview__mail_server_id
+#: model:ir.model.fields,help:mail_multi_website.field_mail_template__mail_server_id
+msgid "Optional preferred server for outgoing mails. If not set, the highest priority one will be used."
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_email_template_preview__report_template
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_template__report_template
+msgid "Optional report to print and attach (Multi-Website)"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_email_template_preview__mail_server_id
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_template__mail_server_id
+msgid "Outgoing Mail Server (Multi-Website)"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_website__mail_server_id
+msgid "Outgoing Mails"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_compose_message__mail_server_id
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_mail__mail_server_id
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_message__mail_server_id
+msgid "Outgoing mail server"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_res_users__signature
+msgid "Signature"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_mail_test_simple
+msgid "Simple Chatter Model"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_res_users
+msgid "Users"
+msgstr ""
+
+#. module: mail_multi_website
+#: model:ir.model,name:mail_multi_website.model_website
+#: model:ir.model.fields,field_description:mail_multi_website.field_mail_test_simple__website_id
+msgid "Website"
+msgstr ""
+

mail_multi_website/models/__init__.py

@@ -0,0 +1,7 @@
+# License MIT (https://opensource.org/licenses/MIT).
+from . import res_users
+from . import ir_property
+from . import mail_template
+from . import mail_thread
+from . import mail_message
+from . import website

mail_multi_website/models/ir_property.py

@@ -0,0 +1,20 @@
+# Copyright 2018 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# Copyright 2018 Kolushov Alexandr <https://it-projects.info/team/KolushovAlexandr>
+# License MIT (https://opensource.org/licenses/MIT).
+from odoo import models
+
+
+class IrProperty(models.Model):
+    _inherit = "ir.property"
+
+    def write(self, vals):
+        res = super(IrProperty, self).write(vals)
+        field_object_list = [
+            self.env.ref("base.field_res_users__email"),
+            self.env.ref("mail.field_mail_template__body_html"),
+            self.env.ref("mail.field_mail_template__mail_server_id"),
+            self.env.ref("mail.field_mail_template__report_template"),
+        ]
+        for fobj in field_object_list:
+            self._update_db_value_website_dependent(fobj)
+        return res

mail_multi_website/models/mail_message.py

@@ -0,0 +1,13 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+from odoo import fields, models
+
+
+class Message(models.Model):
+    _inherit = "mail.message"
+
+    def _default_mail_server_id(self):
+        return self.env.website.mail_server_id.id
+
+    mail_server_id = fields.Many2one(default=_default_mail_server_id)

mail_multi_website/models/mail_template.py

@@ -0,0 +1,185 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+import logging
+
+from odoo import _, api, fields, models, tools
+from odoo.exceptions import UserError
+
+from odoo.addons.mail.models.mail_template import format_date, format_datetime
+
+_logger = logging.getLogger(__name__)
+FIELDS = ["body_html", "mail_server_id", "report_template"]
+
+try:
+    from odoo.addons.mail.models.mail_template import (
+        mako_safe_template_env,
+        mako_template_env,
+    )
+except ImportError:
+    _logger.warning("jinja2 not available, templating features will not work!")
+
+
+class MailTemplate(models.Model):
+
+    _inherit = ["mail.template", "website_dependent.mixin"]
+    _name = "mail.template"
+
+    body_html = fields.Html(company_dependent=True, website_dependent=True)
+    mail_server_id = fields.Many2one(
+        string="Outgoing Mail Server (Multi-Website)",
+        company_dependent=True,
+        website_dependent=True,
+    )
+    report_template = fields.Many2one(
+        string="Optional report to print and attach (Multi-Website)",
+        company_dependent=True,
+        website_dependent=True,
+    )
+
+    def generate_email(self, res_ids, fields=None):
+        """Remove mail_server_id when not set to recompute in _default_mail_server_id in mail.message"""
+        multi_mode = True
+        if isinstance(res_ids, int):
+            multi_mode = False
+        res = super(MailTemplate, self).generate_email(res_ids, fields=fields)
+        if not multi_mode:
+            list_of_dict = {0: res}
+        else:
+            list_of_dict = res
+
+        for _unused, data in list_of_dict.items():
+            if "mail_server_id" in data and not data.get("mail_server_id"):
+                del data["mail_server_id"]
+
+        return res
+
+    @api.model
+    def _render_template(self, template_txt, model, res_ids, post_process=False):
+        """Override to add website to context"""
+        multi_mode = True
+        if isinstance(res_ids, int):
+            multi_mode = False
+            res_ids = [res_ids]
+
+        results = dict.fromkeys(res_ids, u"")
+
+        # try to load the template
+        try:
+            mako_env = (
+                mako_safe_template_env
+                if self.env.context.get("safe")
+                else mako_template_env
+            )
+            template = mako_env.from_string(tools.ustr(template_txt))
+        except Exception:
+            _logger.info("Failed to load template %r", template_txt, exc_info=True)
+            return multi_mode and results or results[res_ids[0]]
+
+        # prepare template variables
+        records = self.env[model].browse(
+            it for it in res_ids if it
+        )  # filter to avoid browsing [None]
+        res_to_rec = dict.fromkeys(res_ids, None)
+        for record in records:
+            res_to_rec[record.id] = record
+        variables = {
+            "format_date": lambda date, date_format=False, lang_code=False: format_date(
+                self.env, date, date_format, lang_code
+            ),
+            "format_datetime": lambda dt, tz=False, dt_format=False, lang_code=False: format_datetime(
+                self.env, dt, tz, dt_format, lang_code
+            ),
+            "format_amount": lambda amount, currency, lang_code=False: tools.format_amount(
+                self.env, amount, currency, lang_code
+            ),
+            "format_duration": lambda value: tools.format_duration(value),
+            "user": self.env.user,
+            "ctx": self._context,  # context kw would clash with mako internals
+        }
+
+        # [NEW] Check website and company context
+        company = self.env["res.company"]  # empty value
+
+        company_id = self.env.context.get("force_company")
+        if company_id:
+            company = self.env["res.company"].sudo().browse(company_id)
+
+        website = self.env.website
+        # [/NEW]
+
+        for res_id, record in res_to_rec.items():
+            # [NEW] Check website and company context
+            record_company = company
+            if not record_company:
+                if hasattr(record, "company_id") and record.company_id:
+                    record_company = record.company_id
+
+            record_website = website
+            if hasattr(record, "website_id") and record.website_id:
+                record_website = record.website_id
+
+            if (
+                record_company
+                and record_website
+                and record_website.company_id != company
+            ):
+                # company and website are incompatible, so keep only company
+                record_website = self.env["website"]  # empty value
+
+            record_context = dict(
+                force_company=record_company.id, website_id=record_website.id
+            )
+            variables["website"] = record_website
+            # [/NEW]
+
+            variables["object"] = record
+            try:
+                render_result = template.render(variables)
+            except Exception:
+                _logger.info(
+                    "Failed to render template %r using values %r"
+                    % (template, variables),
+                    exc_info=True,
+                )
+                raise UserError(
+                    _("Failed to render template %r using values %r")
+                    % (template, variables)
+                )
+            if render_result == u"False":
+                render_result = u""
+            results[res_id] = render_result
+
+        if post_process:
+            for res_id, result in results.items():
+                results[res_id] = self.with_context(
+                    **record_context
+                ).render_post_process(result)
+
+        return multi_mode and results or results[res_ids[0]]
+
+    @api.model
+    def create(self, vals):
+        res = super(MailTemplate, self).create(vals)
+        # make value company independent
+        for f in FIELDS:
+            res._force_default(f, vals.get(f))
+        return res
+
+    def write(self, vals):
+        res = super(MailTemplate, self).write(vals)
+
+        # TODO: will it work with OCA's partner_firstname module?
+        if "name" in vals:
+            fields_to_update = FIELDS
+        else:
+            fields_to_update = [f for f in FIELDS if f in vals]
+        for f in fields_to_update:
+            self._update_properties_label(f)
+
+        return res
+
+    def _auto_init(self):
+        for f in FIELDS:
+            self._auto_init_website_dependent(f)
+        return super(MailTemplate, self)._auto_init()

mail_multi_website/models/mail_thread.py

@@ -0,0 +1,34 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+from odoo import api, models, tools
+
+
+class MailThread(models.AbstractModel):
+    _inherit = "mail.thread"
+
+    @api.model
+    def _message_route_process(self, message, message_dict, routes):
+        rcpt_tos = ",".join(
+            [
+                tools.decode_message_header(message, "Delivered-To"),
+                tools.decode_message_header(message, "To"),
+                tools.decode_message_header(message, "Cc"),
+                tools.decode_message_header(message, "Resent-To"),
+                tools.decode_message_header(message, "Resent-Cc"),
+            ]
+        )
+        rcpt_tos_websiteparts = [
+            e.split("@")[1].lower() for e in tools.email_split(rcpt_tos)
+        ]
+        website = (
+            self.env["website"].sudo().search([("domain", "in", rcpt_tos_websiteparts)])
+        )
+        company = website.mapped("company_id")
+        new_self = self.with_context(
+            allowed_website_ids=website.ids, allowed_company_ids=company.ids
+        )
+
+        return super(MailThread, new_self)._message_route_process(
+            message, message_dict, routes
+        )

mail_multi_website/models/res_users.py

@@ -0,0 +1,50 @@
+# Copyright 2018 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+import logging
+
+from odoo import api, fields, models
+
+_logger = logging.getLogger(__name__)
+FIELD_NAME = "email"
+FIELDS = ["signature"]
+ALL_FIELDS = [FIELD_NAME] + FIELDS
+
+
+class User(models.Model):
+
+    _inherit = ["res.users", "website_dependent.mixin"]
+    _name = "res.users"
+
+    signature = fields.Html(company_dependent=True, website_dependent=True)
+
+    # extra field to detach email field from res.partner
+    email = fields.Char(
+        string="Multi Website Email",
+        company_dependent=True,
+        website_dependent=True,
+        inherited=False,
+        related=None,
+        readonly=False,
+    )
+
+    @api.model
+    def create(self, vals):
+        res = super(User, self).create(vals)
+        # make value company independent
+        res._force_default(FIELD_NAME, vals.get("email"))
+        for f in FIELDS:
+            res._force_default(f, vals.get(f))
+        return res
+
+    def write(self, vals):
+        res = super(User, self).write(vals)
+        # TODO: will it work with OCA's partner_firstname module?
+        if any(k in vals for k in ["name"] + FIELDS):
+            for f in ALL_FIELDS:
+                self._update_properties_label(f)
+        return res
+
+    def _auto_init(self):
+        for f in FIELDS:
+            self._auto_init_website_dependent(f)
+        return super(User, self)._auto_init()

mail_multi_website/models/website.py

@@ -0,0 +1,12 @@
+# Copyright 2017 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+
+from odoo import fields, models
+
+
+class Website(models.Model):
+    _inherit = "website"
+
+    mail_server_id = fields.Many2one(
+        "ir.mail_server", "Outgoing Mails", help="Default outgoing mail server"
+    )

mail_multi_website/static/description/index.html

@@ -0,0 +1,134 @@
+
+<section class="container">
+    <div class="row">
+        <div class="col-md-offset-1 col-md-8 mb64 mt64">
+            <div class="">
+                <h2 class="display-3">Multi-Brand Mailing</h2>
+                <h4 class="text-default">Use single Backend to manage several Websites</h4>
+                <p class="text-default mt16">Version: v<b>13.0</b>.2.0.0</p>
+            </div>
+        </div>
+        <div class="col-md-3 text-right">
+            <p>
+                <img src="https://itpp.dev/images/favicon.png"/>
+                <br/>Tested and maintained by
+                <br/><b>IT Projects Labs</b>
+                <br/>Assitance: <a href="mailto:apps@itpp.dev">apps@itpp.dev</a>
+            </p>
+        </div>
+    </div>
+</section>
+
+
+
+<section class="oe_container">
+    <div class="oe_row oe_spaced">
+        <div class="oe_span12">
+
+            <div class="alert alert-info oe_mt32" style="padding:0.3em 0.6em; font-size: 150%;">
+                <i class="fa fa-hand-o-right"></i><b> Key features: </b>
+                <ul class="list-unstyled">
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        Separate Mail Templates per Website
+                    </li>
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        <em>From</em> address in email has address for current Website
+                    </li>
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        <em>Reply-To</em> address in email has domain of current Website
+                    </li>
+
+                    <li>
+                        <i class="fa fa-check-square-o text-primary"></i>
+                        User's signature per Website
+                    </li>
+
+                </ul>
+            </div>
+
+        </div>
+    </div>
+</section>
+
+
+
+
+<section class="container text-center">
+    <div class="mt-4 mb-3">
+        <h2>Let our expertise work for you!</h2>
+        <h4 class="d-none d-md-block">(Doors and windows below are clickable)</h4>
+        <div class="mb32 d-md-none">
+            <ul class="list-unstyled">
+                <li><a target="_blank" href="https://apps.odoo.com/apps/browse?repo_maintainer_id=59928">All modules</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/browse?price=Free&order=Downloads&repo_maintainer_id=59928">Free Modules</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/category/Point%20of%20Sale/browse?repo_maintainer_id=59928">All POS modules</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/category/Discuss/browse?repo_maintainer_id=59928">All Mail modules</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/category/Website/browse?repo_maintainer_id=59928">All Website modules</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/category/eCommerce/browse?repo_maintainer_id=59928">All eCommerce modules</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=sync+studio&repo_maintainer_id=59928">Sync Studio</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/14.0/openapi/">REST API</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/14.0/base_automation_webhook/">Webhooks</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/14.0/pos_product_available/">POS: show product qty</a></li>
+                <li><a target="_blank" href="https://apps.odoo.com/apps/modules/14.0/web_login_background/">Web Login Background</a></li>
+            </ul>
+        </div>
+        <div class="mb64 d-none d-xl-block">
+            <img class="img img-responsive" src="https://itpp.dev/images/apps/;-)/itpp-labs-1100.jpg" usemap="#itpp-xl" />
+            <map name="itpp-xl">
+                <area alt="Free Modules" target="_blank" href="https://apps.odoo.com/apps/browse?price=Free&order=Downloads&repo_maintainer_id=59928" shape="rect" class="" coords="900,220,1080,625" />
+                <area alt="Sync Studio" target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=sync+studio&repo_maintainer_id=59928" shape="rect" class="" coords="552,186,721,274" />
+                <area alt="REST API" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/openapi/" shape="rect" class="" coords="646,279,720,365" />
+                <area alt="Webhooks" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/base_automation_webhook/" shape="rect" class="" coords="646,370,720,458" />
+                <area alt="POS: show product qty" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/pos_product_available/" shape="rect" class="" coords="82,373,251,459" />
+                <area alt="All modules" target="_blank" href="https://apps.odoo.com/apps/browse?repo_maintainer_id=59928" shape="rect" class="" coords="326,267,381,456" />
+                <area alt="All POS modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Point%20of%20Sale/browse?repo_maintainer_id=59928" shape="rect" class="" coords="82,191,154,276" />
+                <area alt="All Mail modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Discuss/browse?repo_maintainer_id=59928" shape="rect" class="" coords="82,282,155,368" />
+                <area alt="All Website modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Website/browse?repo_maintainer_id=59928" shape="rect" class="" coords="176,282,250,368" />
+                <area alt="All eCommerce modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/eCommerce/browse?repo_maintainer_id=59928" shape="rect" class="" coords="175,189,250,275" />
+                <area alt="Ivan Yelizariev" target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=Ivan+Yelizariev&repo_maintainer_id=59928" shape="rect" class="" coords="554,280,625,456" />
+                <area alt="Web Login Background" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/web_login_background/" shape="rect" class="" coords="420,267,477,456" />
+            </map>
+        </div>
+        <div class="mb64 d-none d-lg-block d-xl-none">
+            <img class="img img-responsive" src="https://itpp.dev/images/apps/;-)/itpp-labs-930.jpg" usemap="#itpp-lg" />
+            <map name="itpp-lg">
+                <area alt="Free Modules" target="_blank" href="https://apps.odoo.com/apps/browse?price=Free&order=Downloads&repo_maintainer_id=59928" shape="rect" class="" coords="760,186,913,528" />
+                <area alt="Sync Studio" target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=sync+studio&repo_maintainer_id=59928" shape="rect" class="" coords="466,157,609,231" />
+                <area alt="REST API" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/openapi/" shape="rect" class="" coords="546,235,608,308" />
+                <area alt="Webhooks" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/base_automation_webhook/" shape="rect" class="" coords="546,312,608,387" />
+                <area alt="POS: show product qty" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/pos_product_available/" shape="rect" class="" coords="69,315,212,388" />
+                <area alt="All modules" target="_blank" href="https://apps.odoo.com/apps/browse?repo_maintainer_id=59928" shape="rect" class="" coords="275,225,322,385" />
+                <area alt="All POS modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Point%20of%20Sale/browse?repo_maintainer_id=59928" shape="rect" class="" coords="69,161,130,233" />
+                <area alt="All Mail modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Discuss/browse?repo_maintainer_id=59928" shape="rect" class="" coords="69,238,131,311" />
+                <area alt="All Website modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Website/browse?repo_maintainer_id=59928" shape="rect" class="" coords="148,238,211,311" />
+                <area alt="All eCommerce modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/eCommerce/browse?repo_maintainer_id=59928" shape="rect" class="" coords="147,159,211,232" />
+                <area alt="Ivan Yelizariev" target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=Ivan+Yelizariev&repo_maintainer_id=59928" shape="rect" class="" coords="468,236,528,385" />
+                <area alt="Web Login Background" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/web_login_background/" shape="rect" class="" coords="355,225,403,385" />
+            </map>
+        </div>
+        <div class="mb64 d-lg-none">
+            <img class="img img-responsive" src="https://itpp.dev/images/apps/;-)/itpp-labs-690.jpg" usemap="#itpp-md" />
+            <map name="itpp-md">
+                <area alt="Free Modules" target="_blank" href="https://apps.odoo.com/apps/browse?price=Free&order=Downloads&repo_maintainer_id=59928" shape="rect" class="" coords="564,138,677,392" />
+                <area alt="Sync Studio" target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=sync+studio&repo_maintainer_id=59928" shape="rect" class="" coords="346,116,452,171" />
+                <area alt="REST API" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/openapi/" shape="rect" class="" coords="405,175,451,228" />
+                <area alt="Webhooks" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/base_automation_webhook/" shape="rect" class="" coords="405,232,451,287" />
+                <area alt="POS: show product qty" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/pos_product_available/" shape="rect" class="" coords="51,233,157,287" />
+                <area alt="All modules" target="_blank" href="https://apps.odoo.com/apps/browse?repo_maintainer_id=59928" shape="rect" class="" coords="204,167,238,286" />
+                <area alt="All POS modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Point%20of%20Sale/browse?repo_maintainer_id=59928" shape="rect" class="" coords="51,119,96,173" />
+                <area alt="All Mail modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Discuss/browse?repo_maintainer_id=59928" shape="rect" class="" coords="51,176,97,230" />
+                <area alt="All Website modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/Website/browse?repo_maintainer_id=59928" shape="rect" class="" coords="110,176,156,230" />
+                <area alt="All eCommerce modules" target="_blank" href="https://apps.odoo.com/apps/modules/category/eCommerce/browse?repo_maintainer_id=59928" shape="rect" class="" coords="109,118,156,172" />
+                <area alt="Ivan Yelizariev" target="_blank" href="https://apps.odoo.com/apps/modules/browse?search=Ivan+Yelizariev&repo_maintainer_id=59928" shape="rect" class="" coords="347,175,392,286" />
+                <area alt="Web Login Background" target="_blank" href="https://apps.odoo.com/apps/modules/14.0/web_login_background/" shape="rect" class="" coords="263,167,299,286" />
+            </map>
+        </div>
+    </div>
+</section>
+

mail_multi_website/tests/__init__.py

@@ -0,0 +1,4 @@
+# License MIT (https://opensource.org/licenses/MIT).
+from . import test_send
+from . import test_render
+from . import test_fetch

mail_multi_website/tests/test_fetch.py

@@ -0,0 +1,63 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# Copyright 2018 Kolushov Alexandr <https://it-projects.info/team/KolushovAlexandr>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+from odoo.tools import mute_logger
+
+from odoo.addons.test_mail.data.test_mail_data import MAIL_TEMPLATE
+from odoo.addons.test_mail.tests.test_mail_mail import TestMail
+
+
+# TODO: Shall we use TestMailgateway class instead?
+class TestFetch(TestMail):
+    at_install = True
+    post_install = True
+
+    def setUp(self):
+        super(TestFetch, self).setUp()
+        self.email_from = '"Sylvie Lelitre" <test.sylvie.lelitre@agrolait.com>'
+        self.website = self.env["website"].create(
+            {"name": "Test Website", "domain": "example.com"}
+        )
+        self.company = self.env["res.company"].create({"name": "New Test Website"})
+        self.website.company_id = self.company
+
+        # copy-paste from mail.tests.test_mail_gateway
+        mail_test_model = self.env["ir.model"]._get("mail.test.simple")
+        # groups@.. will cause the creation of new mail.test.simple
+        self.alias = self.env["mail.alias"].create(
+            {
+                "alias_name": "groups",
+                "alias_user_id": False,
+                "alias_model_id": mail_test_model.id,
+                "alias_contact": "everyone",
+            }
+        )
+
+    @mute_logger("odoo.addons.mail.models.mail_thread", "odoo.models")
+    def test_fetch_multi_website(self):
+        """ Incoming email on an alias creating a new record + message_new + message details """
+        new_groups = self.format_and_process(
+            MAIL_TEMPLATE,
+            self.email_from,
+            "groups@example.com",
+            subject="My Frogs",
+            target_model="mail.test.simple",
+        )
+
+        # Test: one group created by mailgateway administrator
+        self.assertEqual(
+            len(new_groups),
+            1,
+            "message_process: a new mail.test should have been created",
+        )
+        self.assertEqual(
+            new_groups.website_id,
+            self.website,
+            "New record is created with wrong website",
+        )
+        self.assertEqual(
+            new_groups.company_id,
+            self.company,
+            "New record is created with wrong company",
+        )

mail_multi_website/tests/test_mail_model.py

@@ -0,0 +1,11 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+from odoo import fields, models
+
+
+class MailTest(models.Model):
+    _inherit = "mail.test.simple"
+
+    company_id = fields.Many2one("res.company", default=lambda self: self.env.company)
+    website_id = fields.Many2one("website", default=lambda self: self.env.website)

mail_multi_website/tests/test_render.py

@@ -0,0 +1,145 @@
+# Copyright 2018,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# Copyright 2018 Kolushov Alexandr <https://it-projects.info/team/KolushovAlexandr>
+# License MIT (https://opensource.org/licenses/MIT).
+# License OPL-1 (https://www.odoo.com/documentation/user/13.0/legal/licenses/licenses.html#odoo-apps) for derivative work.
+import base64
+
+from odoo.addons.test_mail.tests.test_mail_mail import TestMail
+
+
+class TestRender(TestMail):
+    at_install = True
+    post_install = True
+
+    def setUp(self):
+        super(TestRender, self).setUp()
+
+        self.original_email = self.env.user.email
+        self.original_company = self.env.user.company_id
+        self.email = "superadmin@second-website.example"
+        self.assertNotEqual(self.original_email, self.email)
+
+        self.website = self.env.ref("website.website2")
+        self.company = self.env["res.company"].create({"name": "New Test Website"})
+        self.website.company_id = self.company
+        self.mail_server_id = self.env["ir.mail_server"].create(
+            {"name": "mail server", "smtp_host": "mail.example.com"}
+        )
+        self.website.mail_server_id = self.mail_server_id
+
+        user_admin = self.env.ref("base.user_admin")
+        # copy-paste from mail.tests.test_mail_template
+        self._attachments = [
+            {
+                "name": "first.txt",
+                "datas": base64.b64encode(b"My first attachment"),
+                "res_model": "res.partner",
+                "res_id": user_admin.partner_id.id,
+            },
+            {
+                "name": "second.txt",
+                "datas": base64.b64encode(b"My second attachment"),
+                "res_model": "res.partner",
+                "res_id": user_admin.partner_id.id,
+            },
+        ]
+
+        self.partner_1 = self.env["res.partner"].create({"name": "partner_1"})
+        self.partner_2 = self.env["res.partner"].create({"name": "partner_2"})
+        self.email_1 = "test1@example.com"
+        self.email_2 = "test2@example.com"
+        self.email_3 = self.partner_1.email
+        self.email_template = self.env["mail.template"].create(
+            {
+                "model_id": self.env["ir.model"]._get("mail.test").id,
+                "name": "Pigs Template",
+                "subject": "${website.name}",
+                "body_html": "${object.description}",
+                "user_signature": False,
+                "attachment_ids": [
+                    (0, 0, self._attachments[0]),
+                    (0, 0, self._attachments[1]),
+                ],
+                "partner_to": "%s,%s"
+                % (self.partner_2.id, self.user_employee.partner_id.id),
+                "email_to": "{}, {}".format(self.email_1, self.email_2),
+                "email_cc": "%s" % self.email_3,
+            }
+        )
+
+    def switch_user_website(self):
+        # add website to allowed
+        self.env.user.write(
+            dict(
+                backend_website_ids=[(4, self.website.id)],
+                backend_website_id=self.website.id,
+                company_id=self.company.id,
+                company_ids=[(4, self.company.id)],
+            )
+        )
+
+    def test_website_in_render_variables(self):
+        """Mail values are per website"""
+
+        self.env.user.backend_website_id = None
+        TestModel = self.env["mail.test"].with_context(
+            {"mail_create_nolog": True, "mail_create_nosubscribe": True}
+        )
+        self.test_pigs = TestModel.create(
+            {
+                "name": "Pigs",
+                "description": "Fans of Pigs, unite !",
+                "alias_name": "pigs",
+                "alias_contact": "followers",
+            }
+        )
+
+        # sending without website
+        mail_id = self.email_template.send_mail(self.test_pigs.id)
+        mail = self.env["mail.mail"].browse(mail_id)
+        self.assertEqual(mail.subject, "")
+        self.assertFalse(mail.mail_server_id)
+
+        # sending from frontend
+        self.test_pigs.company_id = None
+        mail_id = self.email_template.with_context(
+            wdb=True, allowed_website_ids=self.website.ids
+        ).send_mail(self.test_pigs.id)
+        mail = self.env["mail.mail"].browse(mail_id)
+        self.assertEqual(mail.subject, self.website.name)
+        self.assertEqual(mail.mail_server_id, self.mail_server_id)
+
+        # copy-pasted tests
+        self.assertEqual(mail.email_to, self.email_template.email_to)
+        # for some reason self.email_template.email_cc might return u'False'
+        self.assertEqual(
+            mail.email_cc or "False", self.email_template.email_cc or "False"
+        )
+        self.assertEqual(
+            mail.recipient_ids, self.partner_2 | self.user_employee.partner_id
+        )
+
+        # sending from frontend
+        self.switch_user_website()
+        mail_id = self.email_template.send_mail(self.test_pigs.id)
+        mail = self.env["mail.mail"].browse(mail_id)
+        self.assertEqual(mail.subject, self.website.name)
+
+    def _test_message_post_with_template(self):
+        # It's deactivated, because workaround is based on checking host value in get_current_website()
+        """Simulate sending email on eCommerce checkout"""
+        self.switch_user_website()
+        self.env.user.email = self.email
+        self.env.user.invalidate_cache()
+        self.env.user.invalidate_cache()
+        self.assertEqual(self.env.user.email, self.email)
+        # switch admin user back
+        self.env.user.company_id = self.original_company
+        self.env.user.invalidate_cache()
+        self.assertEqual(self.env.user.email, self.original_email)
+
+        self.test_pigs.with_context(
+            allowed_website_ids=self.website.ids
+        ).message_post_with_template(self.email_template.id)
+        message = self.env["mail.message"].search([], order="id desc", limit=1)
+        self.assertIn("<%s>" % self.email, message.email_from)

mail_multi_website/tests/test_send.py

@@ -0,0 +1,72 @@
+# Copyright 2018 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+from odoo.tests.common import TransactionCase
+
+
+class TestSendMail(TransactionCase):
+    at_install = True
+    post_install = True
+
+    def setUp(self):
+        super(TestSendMail, self).setUp()
+        self.website = self.env.ref("website.website2")
+        self.company = self.env["res.company"].create({"name": "New Test Website"})
+        self.original_email = self.env.user.email
+        self.original_company = self.env.user.company_id
+        self.email = "superadmin@second-website.example"
+        # Check that current email is set and differs
+        self.assertTrue(self.email)
+        self.assertNotEqual(self.original_email, self.email)
+        self.website.company_id = self.company
+
+    def switch_user_website(self):
+        # add website to allowed
+        self.env.user.write(
+            dict(
+                backend_website_ids=[(4, self.website.id)],
+                backend_website_id=self.website.id,
+                company_id=self.company.id,
+                company_ids=[(4, self.company.id)],
+            )
+        )
+
+    def test_multi_email(self):
+        """User has email addresses per website"""
+        self.switch_user_website()
+        # update user's email
+        self.env.user.email = self.email
+        # Check that writing works
+        self.env.user.flush()
+        self.env.user.invalidate_cache()
+        self.assertEqual(
+            self.env.user.email,
+            self.email,
+            "Write methods doesn't work (Field is not in registry?)",
+        )
+
+        # changing company will automatically update website value to empty value
+        self.env.user.company_id = self.original_company
+        self.env.user.invalidate_cache()
+        self.assertEqual(
+            self.env.user.email,
+            self.original_email,
+            "Multi-email doesn't work on switching websites",
+        )
+
+    def test_multi_email_partner(self):
+        """Partner doesn't have email addresses per website"""
+        original_email = "original@email1"
+        new_email = "new@email2"
+        partner = self.env["res.partner"].create(
+            {"name": "test", "email": original_email}
+        )
+        self.switch_user_website()
+        # update partner's email
+        partner.email = new_email
+        self.assertEqual(partner.email, new_email)
+        # changing company will automatically update website value to empty value
+        self.env.user.company_id = self.original_company
+        self.env.user.invalidate_cache()
+        self.assertEqual(
+            partner.email, new_email, "Partner's email must not be Multi-website"
+        )

mail_multi_website/views/website_views.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright 2018 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+     License MIT (https://opensource.org/licenses/MIT). -->
+<odoo>
+    <record id="view_website_multi_mail_form" model="ir.ui.view">
+        <field name="model">website</field>
+        <field name="inherit_id" ref="website.view_website_form" />
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='default_lang_id']" position="after">
+                <field name="mail_server_id" />
+            </xpath>
+        </field>
+    </record>
+</odoo>

mail_multi_website/wizard/__init__.py

@@ -0,0 +1,2 @@
+# License MIT (https://opensource.org/licenses/MIT).
+from . import mail_compose_message

mail_multi_website/wizard/mail_compose_message.py

@@ -0,0 +1,22 @@
+# Copyright 2018 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# License MIT (https://opensource.org/licenses/MIT).
+from odoo import api, models
+from odoo.http import request
+
+
+class MailComposer(models.TransientModel):
+
+    _inherit = "mail.compose.message"
+
+    @api.model
+    def create(self, vals):
+        """Workaround for https://github.com/odoo/odoo/pull/26589"""
+        if "website_id" not in self.env.context:
+            website = (
+                request and hasattr(request, "website") and request.website or None
+            )
+            if not website:
+                website = self.env["website"].get_current_website()
+            if website:
+                self = self.with_context(website_id=website.id)
+        return super(MailComposer, self).create(vals)