All,
Just a quick heads up, but when I recently performed a hack to check for mail every minute, my battery life went from 3 days to less than a day! So unless you are charging your iPhone every night and not talking on it at all, then I don't recommend simulating "push" email on the iPhone just yet.
The hack can be done by editing the mobilemail.plist file and changing the AutoFetchInterval.
---------
Side Note: I did find this pretty cool Mail.app signature hack. Its actually really neat when done correctly: http://dfbills.com/display/240
Just a quick heads up, but when I recently performed a hack to check for mail every minute, my battery life went from 3 days to less than a day! So unless you are charging your iPhone every night and not talking on it at all, then I don't recommend simulating "push" email on the iPhone just yet.
The hack can be done by editing the mobilemail.plist file and changing the AutoFetchInterval.
---------
Side Note: I did find this pretty cool Mail.app signature hack. Its actually really neat when done correctly: http://dfbills.com/display/240