Greetings,

Another question for a future release would be, can you check
and make sure the user isn't using an email address from the
system or any system you don't want them to sign up for.

EXAMPLE:

My system: useremailaddress.com
User signs up and tries to use: momma@useremailaddress.com

The error would say, sorry we need this to be a third party email address
for password safty. Or some error like that.

Also, if I don't want HOTMAIL.com users signing up; the error would be:
Please use your email address from your ISP, not a free email
service.

This system would almost be like the username portion of setting up an account, but
instead its the third party email address they are using.

Thank you,

Avery