Aloha - I have a Droid and I can't send out any emails - they just hang up in my outbox. Any suggestions?
Try a refresh on your e-mail account. Go your e-mail screen, where the account is listed, and long press the account name. A box will open with several choices -- press refresh. This may solve your problem.
Can also try to go into Manage applications menu, select the "All" tab, scroll down to the Gmail application and press "Clear data". You will have to re-add the Gmail account once you have cleared.