I recently added a second pop3 email address to my 8830 and it is now my default address when i compose an email. I've went to advanced settings, default services, and changed it to the original email address, but it is still using the second as the default. Is there anywhere else to change this? Thanks!

Your newly composed email will default to the previous sent from address for the contact you are using. You may have to manually change it on a few for a while.