Mailtrack is a way to include in your Gmail the ✓✓ that are so useful in mobile messaging so that you're sure your email was sent and that your recipient has opened it.
Our philosophy is based on simplicity and practicality. After installing Mailtrack, you will see that we put nothing but the double-checks in your Gmail. Your experience with Gmail remains exactly the same, and now you know whether or not emails that you've sent have been opened.
Install Mailtrack for Gmail