Many spammers like to use temporary or disposable email addresses. This would help by not allowing the use of those email services. It’s still a work in progress. It’s still under development as I try to make it work with all email fields.
It verifies from a text file that I have installed locally, which has a list of 3,462 temp or disposable email domain addresses that I got from: @adamloving & @jamesonev
Be sure to check back so you can see the whole working script.