How to track sent emails from Gmail?

An easy step by step guide on Tracking your sent emails. You will get to know as soon as your recipient opens the email.
Download the extension from Chrome Web Store. This link is
chrome.google....
Mailtrack easily lets you track your sent mails for free. Don't forget to Like and Share the video.
Know when your emails are opened.
Mailtrack is an email tracking extension for Gmail that lets you know if the emails you’ve sent have been read or not.
Mailtrack extension adds the double-check marks to your Gmail so you can easily track emails and get a read receipt