diff --git a/addons/mail_plugin/controllers/mail_plugin.py b/addons/mail_plugin/controllers/mail_plugin.py
index dadb3cf495f..ecc88f6bf5d 100644
--- a/addons/mail_plugin/controllers/mail_plugin.py
+++ b/addons/mail_plugin/controllers/mail_plugin.py
@@ -153,6 +153,18 @@ class MailPluginController(http.Controller):
         if not normalized_email:
             return {'error': _('Bad Email.')}
 
+        notification_emails = request.env['mail.alias.domain'].sudo().search([]).mapped('default_from_email')
+        if normalized_email in notification_emails:
+            return {
+                'partner': {
+                    'name': _('Notification'),
+                    'email': normalized_email,
+                    'enrichment_info': {
+                        'type': 'odoo_custom_error', 'info': _('This is your notification address. Search the Contact manually to link this email to a record.'),
+                    },
+                },
+            }
+
         # Search for the partner based on the email.
         # If multiple are found, take the first one.
         partner = request.env['res.partner'].search(['|', ('email', 'in', [normalized_email, email]),
@@ -215,6 +227,9 @@ class MailPluginController(http.Controller):
         params name: name of the new partner
         params company: parent company id of the new partner
         """
+        notification_emails = request.env['mail.alias.domain'].sudo().search([]).mapped('default_from_email')
+        if tools.email_normalize(email) in notification_emails:
+            raise Forbidden()
         # old route name "/mail_client_extension/partner/create is deprecated as of saas-14.3,it is not needed for newer
         # versions of the mail plugin but necessary for supporting older versions
         # TODO search the company again instead of relying on the one provided here?
diff --git a/addons/mail_plugin/i18n/mail_plugin.pot b/addons/mail_plugin/i18n/mail_plugin.pot
index 6530a084227..19a018bec9c 100644
--- a/addons/mail_plugin/i18n/mail_plugin.pot
+++ b/addons/mail_plugin/i18n/mail_plugin.pot
@@ -544,6 +544,13 @@ msgstr ""
 msgid "Not enough credits to enrich."
 msgstr ""
 
+#. module: mail_plugin
+#. odoo-python
+#: code:addons/mail_plugin/controllers/mail_plugin.py:0
+#, python-format
+msgid "Notification"
+msgstr ""
+
 #. module: mail_plugin
 #. odoo-javascript
 #: code:addons/mail_plugin/static/src/to_translate/translations_gmail.xml:0
@@ -737,6 +744,13 @@ msgstr ""
 msgid "This contact has no email address, no company could be enriched."
 msgstr ""
 
+#. module: mail_plugin
+#. odoo-python
+#: code:addons/mail_plugin/controllers/mail_plugin.py:0
+#, python-format
+msgid "This is your notification address. Search the Contact manually to link this email to a record."
+msgstr ""
+
 #. module: mail_plugin
 #. odoo-python
 #: code:addons/mail_plugin/controllers/mail_plugin.py:0
diff --git a/addons/mail_plugin/tests/test_controller.py b/addons/mail_plugin/tests/test_controller.py
index 8afbb9541b4..5a23750156b 100644
--- a/addons/mail_plugin/tests/test_controller.py
+++ b/addons/mail_plugin/tests/test_controller.py
@@ -187,3 +187,22 @@ class TestMailPluginController(TestMailPluginControllerCommon):
         )
         second_company_id = result["partner"]["company"]["id"]
         self.assertEqual(first_company_id, second_company_id, "Should not create a new company")
+
+    def test_get_partner_is_default_from(self):
+        """When the email_from is the server default from address, we return a custom message instead of trying to match a partner record."""
+        self.env['mail.alias.domain'].create({'name': 'example.com', 'default_from': 'notification'})
+        mock_iap_enrich = Mock()
+        result = self.mock_plugin_partner_get("Test partner", "notificaTION@EXAMPLE.COM", mock_iap_enrich)
+        self.assertEqual(
+            result,
+            {
+                'partner': {
+                    'name': 'Notification',
+                    'email': 'notification@example.com',
+                    'enrichment_info': {
+                        'type': 'odoo_custom_error',
+                        'info': 'This is your notification address. Search the Contact manually to link this email to a record.',
+                    },
+                },
+            },
+        )