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@@ -146,6 +146,9 @@ class Mail {
      * @time 2023/2/18 9:54
      */
     public function syncMail($email_id,$folder_id,$folder='INBOX',$db = null):bool {
+        if(empty($folder)){
+            return 0;
+        }
 //        _echo('正在同步文件夹：'.$folder);
         $db = $db ? $db : db();
         // 选择文件夹
@@ -304,7 +307,9 @@ class Mail {
      * @time 2023/2/9 10:29
      */
     public function syncBody($folder_name, $uid , $id, $db=null):bool {
-
+        if(empty($folder_name)){
+            return 0;
+        }
         $db = $db ? $db : db();
         // 选择文件夹
         $this->client->selectFolder($folder_name);