phplist-plugin-disposablemailblock ================ There is a growing popularity of disposable email addresses. However, this is completely in contrast to being able to run a responsible newsletter. This plugin will disallow people to sign up with some of the disposable domains available. It will probably never cover all of them, but at least it's a start.
douglsmith/phplist-plugin-disposablemailblock
Prevent people from signing up to the phpList newsletter with a disposable email
PHP