An email extension for Gmail that you can quickly know if the emails you’ve sent have been read or not.
Simple & Easy:
Check who checked your email
Check when someone checked your email.
Check how many times a person checked your email.
Check where someone checked your email.
Compatible for Chrome、Firefox、Edge、Opera；
Our software is privacy compliant and we never share data with 3rd parties.
Totally Free and Unlimited to use; No ADs