Mail Receipt allows you to know when someone opens and read one of your email. Are you tired of not receiving answer on your emails ? Use Mail Receipt to know when your emails are opened and make sure that your email are well received. Mail Receipt is a new tool for Gmail to know who is opening your email and store all the data on a Google Sheets you own. It allows you to monitor your mail campaign and know if someone has read or not your email. Let us know what you think at firstname.lastname@example.org Best!