Find Gmail Messages that are Awaiting Response

Published in: Gmail - Google Apps Script

Google Apps Script for Gmail, creates a label that matches all threads where you are the last sender. Useful for finding email messages in your mailbox that are still awaiting a response from the customer. Credit @GSAPU.

function label_last_sent_message() {
  var emailAddress = Session.getEffectiveUser().getEmail();
  var EMAIL_REGEX = /[a-zA-Z0-9\._\-]+@[a-zA-Z0-9\.\-]+\.[a-z\.A-Z]+/g;
  var label = GmailApp.createLabel("LastSentMessage");
  var d = new Date();
  d.setDate(d.getDate() - 7);
  var dateString = d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate();
  threads ="in:Sent after:" + dateString);
  for (var i = 0; i < threads.length; i++)
    var thread = threads[i];
    var lastMessage = thread.getMessages()[thread.getMessageCount()-1];
    var lastMessageSender = lastMessage.getFrom().match(EMAIL_REGEX)[0];
    if ((thread.getMessageCount() > 1) && (lastMessageSender == emailAddress))

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Published in: Gmail - Google Apps Script

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Web Geek, Google Developer Expert
Amit Agarwal

Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India. He is the developer of Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory

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