i had an att blackberry and registered my email addresses to that phone and when i did a BB swap to verizon my old att emails are on my my new BB and are non functional PLEASE HELP
That's where you can add/delete email accounts, adjust some settings and send service books. I've found it to be very handy and much easier than using my BB. All of my BB's(6 over 7 years) have been with Verizon. I can also use that page to do device switches so all the accounts and such get switched over easily.
If that doesn't work go to Options -> Advanced Options -> Service Book, and delete all the entries that are linked with your ATT email account. Then resend service books and do a battery pull.