The Internet Message Access Protocol or IMAP is one of the two most prevalent Internet standard protocols for e-mail retrieval, the other being POP3. Virtually all modern e-mail clients and servers support both protocols as a means of transferring e-mail messages from a server, such as those used by Gmail, to a client, such as Mozilla Thunderbird, Apple Mail and Microsoft Outlook. Once configured, the client's use of such protocols remains transparent to the user.
Free pushmail with IMAP IDLE howto
Did you now that is possible to get totally free pushmail on your symbian phone? All you pay for is data traffic if you use via GPRS/UMTS. And if you have a good data traffic plan it would be totally free. The solution works really great via WLAN, and on most GPRS/UMTS networks. Some operators however automatically close idle connections, but often this can be avoided by forcing the access point (AP) to give you a public IP-address.Read more »

