diff --git a/api/src/Storage/Tracking.php b/api/src/Storage/Tracking.php
index 18fdeeb0bc..482d3e810b 100644
--- a/api/src/Storage/Tracking.php
+++ b/api/src/Storage/Tracking.php
@@ -778,6 +778,9 @@ abstract class Tracking
 					$notification->set_attachments($attachments);
 				}
 				$notification->send();
+
+				// Notification can (partially) succeed and still generate errors
+				$this->errors += $notification->errors();
 			}
 			catch (Exception $exception)
 			{