Exchange ActiveSync lets you synchronize data between your mobile device and Exchange 2007. You can synchronize e-mail, contacts, calendar information, and tasks. Devices that run Windows Mobile software, including Windows Mobile powered Pocket PC 2002, Windows Mobile powered Pocket PC 2003, and Windows Mobile 5.0, are all supported.
If you use a device that has Windows Mobile 5.0 and the Messaging Security and Feature Pack (MSFP) installed, your mobile device will support Direct Push. Direct Push is a technology that is built into Exchange ActiveSync that keeps a mobile device continuously synchronized with an Exchange mailbox.
Exchange ActiveSync is a Microsoft Exchange synchronization protocol that is optimized to work together with high-latency and low-bandwidth networks. Exchange ActiveSync in Exchange Server 2007 SP1 includes the following improvements for administrators and end-users.
Outlook Web Access Premium in Exchange Server 2007 SP1 adds many new features listed in Client Access Role.
For more information about Exchange ActiveSync, see Overview of Exchange ActiveSync.