block notification on msg import

msg_attachments_to_mail_message/models/__init__.py

@@ -1,2 +1,3 @@
 from . import ir_attachment
+from . import mail_thread
 from . import res_config_settings

msg_attachments_to_mail_message/models/ir_attachment.py

@@ -435,11 +435,14 @@ class IrAttachment(models.Model):
                 target_thread_id = self.res_id if self.res_model else False
                 
                 # Process the email with forced model
-                self.env['mail.thread'].with_context(
-                    mail_create_nosubscribe=True,  # Don't auto-subscribe the sender
-                    mail_create_nolog=True,  # Don't create log message
-                    default_model=target_model,  # Force the model
-                ).message_process(
+                context = {
+                    'default_model': target_model,  # Force the model
+                    'mail_notify_force_send': False,  # Don't force send notifications
+                    'mail_auto_subscribe_no_notify': True,  # Prevent auto-subscription notifications
+                    'is_msg_import': True,  # Flag to identify MSG import
+                }
+                
+                self.env['mail.thread'].with_context(**context).message_process(
                     model=target_model,
                     message=eml_content,
                     custom_values=custom_values,
@@ -657,16 +660,11 @@ class IrAttachment(models.Model):
 
             # Set context for message creation
             context = {
-                "default_model": self.res_model,
-                "default_res_id": self.res_id,
-                "mail_create_nosubscribe": True,
-                "mail_create_nolog": True,
-                "mail_notify_force_send": False,
-                "mail_create_force_model": self.res_model,
-                "mail_thread_quote": False,
-                "mail_create_skip_followers": True,
-                "mail_auto_subscribe_no_notify": True,  # Prevent auto-subscription notifications
-                "no_auto_thread": True  # Prevent automatic thread creation
+                'default_model': self.res_model,
+                'default_res_id': self.res_id,
+                'mail_notify_force_send': False,  # Don't force send notifications
+                'mail_auto_subscribe_no_notify': True,  # Prevent auto-subscription notifications
+                'is_msg_import': True,  # Flag to identify MSG import
             }
 
             try:

msg_attachments_to_mail_message/models/mail_thread.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+from odoo import models, api
+from odoo.tools import email_normalize
+
+
+class MailThread(models.AbstractModel):
+    _inherit = 'mail.thread'
+
+    def _notify_thread(self, message, msg_vals=False, **kwargs):
+        """Override _notify_thread to disable notifications for MSG file imports.
+        
+        When processing a message that comes from an MSG file import, we want to
+        disable all notifications to avoid sending automatic responses.
+        
+        Returns:
+            list: Empty list of recipients when is_msg_import is True, otherwise normal recipients data
+        """
+        # Check if this is called from MSG processing
+        if self.env.context.get('is_msg_import', False):
+            # Return empty recipients list for MSG imports
+            return []
+        
+        return super()._notify_thread(message, msg_vals=msg_vals, **kwargs)