I just got a HTC Thunderbolt on Monday. I'm using the native Droid e-mail app, and, coming from a BB 8900, I've got a few questions: Is there any way to save e-mails? Are old e-mails automatically purged after a period of time? Is there a way to create folders to archive/manage e-mails? Does anyone use a 3rd party mail program that has better functionality than the Droid app?