QoreFunction has released PushEffect for Windows Mobile. PushEffect provides a push-like email solution that works with Gmail, Yahoo, and most POP3 and IMAP accounts. It works based on SMS messages. In case that doesn't sound familiar, that's how Windows Mobile used to do always up to date email before MSFP was released. However, it only worked with Exchange. QoreFunctions solution works with most existing email systems. You might want to check this out if you're looking for a way to stay on top of your non-Exchange based email.
"I have no special talents, I am only passionately curious" - Albert Einstein