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Push without MobileMe or Exchange?
Authored by: operator207 on Jul 11, '08 07:37:07AM

IMAP Idle. If your IMAP server supports it, and your client will do IMAP Idle (I am not sure about the iPhone, but most IMAP clients support at least Idle), the IMAP server will tell/push any updates of the inbox to the client. The problem is the phone needs to maintain a connection to the server, which can be hard. Switching from wifi to edge/3G or losing your edge/3G connection when the hand off between towers is too slow. The rebuilding of the data connection and the IMAP session could be intensive, data-wise.



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