diff --git a/odoo/addons/base/models/ir_mail_server.py b/odoo/addons/base/models/ir_mail_server.py
index c17a8ddbed6..ee8944083b6 100644
--- a/odoo/addons/base/models/ir_mail_server.py
+++ b/odoo/addons/base/models/ir_mail_server.py
@@ -201,7 +201,12 @@ class IrMailServer(models.Model):
                 except Exception:
                     # ignored, just a consequence of the previous exception
                     pass
-        raise UserError(_("Connection Test Succeeded! Everything seems properly set up!"))
+
+        title = _("Connection Test Succeeded!")
+        message = _("Everything seems properly set up!")
+        self.env['bus.bus'].sendone(
+            (self._cr.dbname, 'res.partner', self.env.user.partner_id.id),
+            {'type': 'simple_notification', 'title': title, 'message': message, 'sticky': False, 'warning': False})
 
     def connect(self, host=None, port=None, user=None, password=None, encryption=None,
                 smtp_debug=False, mail_server_id=None):