diff --git a/addons/mail/static/src/models/messaging_notification_handler/messaging_notification_handler.js b/addons/mail/static/src/models/messaging_notification_handler/messaging_notification_handler.js
index 6764f28ceb4..49f07bc5423 100644
--- a/addons/mail/static/src/models/messaging_notification_handler/messaging_notification_handler.js
+++ b/addons/mail/static/src/models/messaging_notification_handler/messaging_notification_handler.js
@@ -77,6 +77,10 @@ function factory(dependencies) {
                             channelId: id,
                         }, data));
                     case 'res.partner':
+                        if (id !== this.env.messaging.currentPartner.id) {
+                            // ignore broadcast to other partners
+                            return;
+                        }
                         return this._handleNotificationPartner(Object.assign({}, data));
                     default:
                         console.warn(`mail.messaging_notification_handler: Unhandled notification "${model}"`);
diff --git a/addons/mail/static/tests/helpers/mock_server.js b/addons/mail/static/tests/helpers/mock_server.js
index d978d8e73f6..f57ca20a508 100644
--- a/addons/mail/static/tests/helpers/mock_server.js
+++ b/addons/mail/static/tests/helpers/mock_server.js
@@ -863,7 +863,7 @@ MockServer.include({
                 message_ids: messageIDs,
                 type: "deletion",
             };
-            const metaData = [dbName, 'res.partner'];
+            const metaData = [dbName, 'res.partner', this.currentPartnerId];
             const notification = [metaData, notifData];
             this._widget.call('bus_service', 'trigger', 'notification', [notification]);
         } else if (decision === 'accept') {