If you do get annoying, illegal spams there are things you can do!
1. You can get the ISP # by sending the e-mail to:http://email@example.com
It will come back with the host.You can then forward the e-mail to abuse@”hostname”.com (For instance if it isprodigy, etc. type that here.
or try firstname.lastname@example.org
Another suggestion is if you get illegal e-mails you may want to just forward them to the FTC(Federal Trade Commission) /their e-mail is:UCE@ftc.gov
Hope this helps!