// ==UserScript==
// @name         Gmail Inbox Mailtrack
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://mail.google.com/mail/u/*
// @match        https://inbox.google.com/u/*
// @grant        none
// ==/UserScript==
function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}
document.onkeydown=async function(e) {
    'use strict';
if ( e.key=='c'){
await sleep(1000);
    console.log('MT');
    document.querySelector('div.mt-signature').remove();
}

}