diff --git a/HttpServer/Events/OnShutdown.php b/HttpServer/Events/OnShutdown.php
index 7d75de13..73d5550f 100644
--- a/HttpServer/Events/OnShutdown.php
+++ b/HttpServer/Events/OnShutdown.php
@@ -33,7 +33,7 @@ class OnShutdown extends Callback
 	 */
 	public function onHandler(Server $server)
 	{
-//		Coroutine::create([$this,'system_mail'],'server shutdown~');
+		$this->system_mail('server shutdown~');
 		$event = Snowflake::app()->getEvent();
 		if (!$event->exists(Event::SERVER_SHUTDOWN)) {
 			return;
diff --git a/HttpServer/Events/OnWorkerError.php b/HttpServer/Events/OnWorkerError.php
index 1e85efd7..0cbd9c71 100644
--- a/HttpServer/Events/OnWorkerError.php
+++ b/HttpServer/Events/OnWorkerError.php
@@ -28,12 +28,12 @@ class OnWorkerError extends Callback
 		if (!Config::has('email')) {
 			return;
 		}
-//		Coroutine::create([$this,'system_mail'],print_r([
-//			'$worker_pid' => $worker_pid,
-//			'$worker_id'  => $worker_id,
-//			'$exit_code'  => $exit_code,
-//			'$signal'     => $signal,
-//		], true));
+		$this->system_mail(print_r([
+			'$worker_pid' => $worker_pid,
+			'$worker_id'  => $worker_id,
+			'$exit_code'  => $exit_code,
+			'$signal'     => $signal,
+		], true));
 	}
 
 }