How to tell if an email is active or not
- How to check if an email is active or not
- How to know if an email is active or not
- How to check if an email address is active or not
- How to check if an email id is active or not
- How to check if an email address exists
- How to know whether email is read or not
- How to know if an email has been read
- How to check email address is valid or not
- How to verify the email