07-28-2012 07:39 PM
07-29-2012 10:04 AM - edited 07-29-2012 10:09 AM
If you go to your phone's browser and follow www.blackberry.com/integrate , you should be able to deal with it from there.
I hope that helps you.
EDIT: OK, apparently that's good for adding an account but not for deleting one. If you contact your carrier, they can either help you with it or can grant you access to their self-serve BIS site from where you can take care of your email account(s).
There. I hope THAT helps you.