What happens to the Sent Mail, does it get auto deleted?

Click Options from the mail screen, then click Mail Options on the drop down, next page click General Preferences, on that page look for and click Save Sent Items. If they are not marked to save they will delete immediately. If marked to save, they will always stay there. The draft bin no longer saves after you send it out. On the upgraded clic mail click " What's New" then read about the Draft bin. It will save if you are creating a new mail and there is a power outage.