Following running my Touch Pro2 battery all the way down my internet access quit and my two POP3 email acounts stopped working. I discovered that I had to re-establish the wireless internet conector to get my browsers to work. Opera and IE now work. The individual account icons still show on the mail screen indicating several messages in each account and show the tease view of the most recent email but the accounts are not available. They don't appear on the Messaging / Select an Account screen - all that's listed is Text/Multimedia and Setup E-mail. There is nothing listed to delete. When I try to add a new instance of a POP3 account it will accept all the info but it will not connect with the POP3 server.
What should I do next, re-flash the T-mo OS and start from scratch?
Got tired of waiting for advice so I did a Master Reset and re-synced to restore my Contacts and Calendar. Re-created email accounts, they work OK now. I do get much improved battery life over what I recently experienced. Guess it just needed hosed out.