bug

@@ -158,17 +158,19 @@ class Home extends Base {
                             }
                         }
                     }
+                    if($uids){
+                        // 进行同步
+                        $mail->syncUidEmail(
+                            $uids,
+                            $email['id'],
+                            $folder['origin_folder'],
+                            $folder['id'],
+                            [],
+                            [],
+                            db()
+                        );
+                    }
 
-                    // 进行同步
-                    $mail->syncUidEmail(
-                        $uids,
-                        $email['id'],
-                        $folder['origin_folder'],
-                        $folder['id'],
-                        [],
-                        [],
-                        db()
-                    );
                 }
 
             }