diff --git a/src/daemon/spawner.py b/src/daemon/spawner.py
index 271f192..adee486 100644
--- a/src/daemon/spawner.py
+++ b/src/daemon/spawner.py
@@ -1453,6 +1453,7 @@ curl -X POST http://{api_host}:{api_port}/api/projects/{project_id}/tasks/{task_
             finally:
                 conn.close()
             # F2: conn 已关闭，Blackboard 内部自己 get_connection
+            if status == "failed":
                 reason = (detail or {}).get("reason", "unknown")
                 try:
                     from src.daemon.mail_notify import _is_mail_project, notify_mail_failed