I had a message stuck sending in yahoo so I deleted the account and reentered it. Then it appeared fine but all of a sudden it showed there were actually 3 open mailboxes 2frozen from before with an old time and one up to date with the unsent message stuck in the nonexistent outbox. I can send messages now but i was hoping someone may know how can I close the 2 mailboxes lingering in the background And get rid of the message that won't send?