ReviveToday closed inbox auto-reply

Code.gs

function autoReply() {
  var label = GmailApp.getUserLabelByName("AutoReply");
  var threads = GmailApp.search('label:inbox label:unread to:admin@revive.today');
  var sender = "admin@revive.today";
  var senderName = "ReviveToday Do Not Reply";
  var message = "Hello,<br><br>Thank you for your email. Unfortunately, due to a high level of spam and malicious emails this inbox is now closed.<br><br>The following are now the alternative options:<ul><li>For discussions on all things retro, please consider joining the <a href='http://revive.today/discord'>ReviveToday Discord</a>.</li><li>For website matters, please use the <a href='http://revive.today/contact'>Contact form</a>.</li></ul><br><br>Kind regards,<br>ReviveToday Team";
  var subject = "Auto-Reply: Discontinued Inbox";
  
  for (var i = 0; i < threads.length; i++) {
    var thread = threads[i];
    var messages = thread.getMessages();
    for (var j = 0; j < messages.length; j++) {
      if (messages[j].getTo() == sender) {
        var email = messages[j].getReplyTo();
        if (!email) {
          email = messages[j].getFrom();
        }
        GmailApp.sendEmail(email, subject, message, {from: '"' + senderName + '" <' + sender + '>', htmlBody: message});
        //var replyMessage = messages[j].createReply("", {from: sender, htmlBody: message});
        //replyMessage.send();
      }
    }
    thread.addLabel(label);
  }
}

This was built with significant assistance from ChatGPT.