diff --git a/addons/mail/models/res_partner.py b/addons/mail/models/res_partner.py
index 1a79438d033..39ebe2f17bd 100644
--- a/addons/mail/models/res_partner.py
+++ b/addons/mail/models/res_partner.py
@@ -125,7 +125,7 @@ class Partner(models.Model):
         return partners_format
 
     def _message_fetch_failed(self):
-        """Returns all messages, sent by the current partner, that have errors, in
+        """Returns first 100 messages, sent by the current partner, that have errors, in
         the format expected by the web client."""
         self.ensure_one()
         notifications = self.env['mail.notification'].search([
@@ -134,7 +134,7 @@ class Partner(models.Model):
             ('mail_message_id.message_type', '!=', 'user_notification'),
             ('mail_message_id.model', '!=', False),
             ('mail_message_id.res_id', '!=', 0),
-        ])
+        ], limit=100)
         return notifications.mail_message_id._message_notification_format()
 
     def _get_channels_as_member(self):