[18.0][ADD] base_import_mail_disable: disable outgoing mail during imports

base_import_mail_disable/README.rst

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+========================
+Base Import Mail Disable
+========================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:3d3dc34640e4bb2b9924e591cdcbd656dcfadc8cc0844ad76932fff6aab1b40c
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fserver--tools-lightgray.png?logo=github
+    :target: https://github.com/OCA/server-tools/tree/18.0/base_import_mail_disable
+    :alt: OCA/server-tools
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/server-tools-18-0/server-tools-18-0-base_import_mail_disable
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/server-tools&target_branch=18.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module ensures that Odoo strictly disables outbound emails when
+importing massive quantities of data via the standard ``base_import``
+wizard.
+
+**Problems it solves:**
+
+- Safeguards the external SMTP queue against badly-coded or third-party
+  custom modules that might explicitly trigger ``mail.mail.create`` or
+  ``template.send_mail()`` hooks during bulk imports.
+- Dynamically intercepts outbound mail in the background and silently
+  cancels the transmission sequence natively, guaranteeing 100% SMTP
+  silence during data migrations.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+To verify the functionality of the module:
+
+1. Go to any list view in Odoo (e.g., *Contacts*, *Sales Orders*,
+   *Users*).
+2. Click **Favorites > Import records**.
+3. Upload your CSV/Excel file normally.
+4. The module operates entirely in the background. It will automatically
+   intercept the ``model.load()`` operation globally. All explicitly
+   triggered outbound emails will be routed to the outgoing queue
+   gracefully as "Cancelled," meaning zero notifications will reach
+   end-user inboxes.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/server-tools/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/server-tools/issues/new?body=module:%20base_import_mail_disable%0Aversion:%2018.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Heliconia Solutions Pvt. Ltd.
+
+Contributors
+------------
+
+- `Heliconia Solutions Pvt. Ltd. <https://www.heliconia.io>`__
+
+  - Bhavesh Heliconia
+
+Maintainers
+-----------
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+.. |maintainer-Bhavesh Heliconia| image:: https://github.com/Bhavesh Heliconia.png?size=40px
+    :target: https://github.com/Bhavesh Heliconia
+    :alt: Bhavesh Heliconia
+
+Current `maintainer <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-Bhavesh Heliconia| 
+
+This module is part of the `OCA/server-tools <https://github.com/OCA/server-tools/tree/18.0/base_import_mail_disable>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

base_import_mail_disable/__init__.py

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+# Copyright 2026 Heliconia Solutions Pvt. Ltd.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import models

base_import_mail_disable/__manifest__.py

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+# Copyright 2026 Heliconia Solutions Pvt. Ltd.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Base Import Mail Disable",
+    "summary": "Disables sending of emails and notifications during data imports "
+    "to avoid flooding",
+    "version": "18.0.1.0.0",
+    "category": "Tools",
+    "website": "https://github.com/OCA/server-tools",
+    "author": "Heliconia Solutions Pvt. Ltd., Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "depends": [
+        "base_import",
+        "mail",
+    ],
+    "data": [],
+    "maintainers": ["Bhavesh Heliconia"],
+    "installable": True,
+    "application": False,
+    "auto_install": False,
+}

base_import_mail_disable/models/__init__.py

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+# Copyright 2026 Heliconia Solutions Pvt. Ltd.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import mail_mail

base_import_mail_disable/models/mail_mail.py

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+# Copyright 2026 Heliconia Solutions Pvt. Ltd.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class MailMail(models.Model):
+    _inherit = "mail.mail"
+
+    @api.model_create_multi
+    def create(self, values_list):
+        """
+        Intercept hard-coded mail.mail record creations during mass imports.
+        Instead of letting them queue normally, forcefully flag them as 'cancel'
+        so the mail cron job inherently ignores them.
+        """
+        if self.env.context.get("import_file"):
+            for vals in values_list:
+                vals["state"] = "cancel"
+                vals["auto_delete"] = False
+        return super().create(values_list)
+
+    def send(self, auto_commit=False, raise_exception=False, post_send_callback=None):
+        """
+        Intercept synchronous/immediate mail dispatch calls during mass imports.
+        Simulate a successful dispatch by returning True, while protecting the
+        SMTP server from spam.
+        """
+        if self.env.context.get("import_file"):
+            return True
+        return super().send(
+            auto_commit=auto_commit,
+            raise_exception=raise_exception,
+            post_send_callback=post_send_callback,
+        )

base_import_mail_disable/pyproject.toml

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+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"

base_import_mail_disable/readme/CONTRIBUTORS.md

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+- [Heliconia Solutions Pvt. Ltd.](https://www.heliconia.io)
+  - Bhavesh Heliconia

base_import_mail_disable/readme/DESCRIPTION.md

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+This module ensures that Odoo strictly disables outbound emails when importing massive quantities of data via the standard `base_import` wizard.
+
+**Problems it solves:**
+* Safeguards the external SMTP queue against badly-coded or third-party custom modules that might explicitly trigger `mail.mail.create` or `template.send_mail()` hooks during bulk imports.
+* Dynamically intercepts outbound mail in the background and silently cancels the transmission sequence natively, guaranteeing 100% SMTP silence during data migrations.

base_import_mail_disable/readme/USAGE.md

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+To verify the functionality of the module:
+
+1. Go to any list view in Odoo (e.g., *Contacts*, *Sales Orders*, *Users*).
+2. Click **Favorites > Import records**.
+3. Upload your CSV/Excel file normally.
+4. The module operates entirely in the background. It will automatically intercept the `model.load()` operation globally. All explicitly triggered outbound emails will be routed to the outgoing queue gracefully as "Cancelled," meaning zero notifications will reach end-user inboxes.