Suggest an alternative to

IP-Biter

IP-Biter: The Hacker-friendly E-Mail (but not only) Tracking Framework

Why do you think that https://github.com/PHPMailer/PHPMailer is a good alternative to IP-Biter

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with IP-Biter. Optional.

A valid email to send you a verification link when necessary or log in.