问Gmail自动回复脚本-如何停止多个回复？

EN

function initializeLogs(){
  //Get Script properties
  var scriptProperties = PropertiesService.getScriptProperties();
  scriptProperties.setProperty('email','');
}

function reply() {
  
  //Get Script properties
  var scriptProperties = PropertiesService.getScriptProperties();
  var emailLogs = scriptProperties.getProperty('email');
  Logger.log(emailLogs);
  var label = GmailApp.getUserLabelByName('new-mail');
  var messages = label.getThreads();
  
  for (let mess of messages) {
    if (mess.getMessageCount() == 1) {

      //get email address of the message sender
      var sender = mess.getMessages()[0].getFrom();

      if(!emailLogs.includes(sender)){
        Logger.log(sender);
        //sender not yet in the logs, send reply
        mess.reply('attached',{
          attachments:[file]
          });

        mess.removeLabel(label);

        //add sender to the logs
        scriptProperties.setProperty('email', emailLogs+sender)
      }
    }
      else mess.removeLabel(label)
  }
}