SyncML servers are an excellent strategy to connect your office messaging system with mobile devices.
Fenestrae’s Mobile Data Server Sync Edition (http://www.fenestrae.com/mdssync/) is a good example. It synchronizes all Exchange data types–email, contacts, calendar, notes, and tasks.
At the server end, it connects to Exchange. At the mobile device end, it connections with any device that has built-in SyncML support. That is already a large number of devices, and the list is growing all the time. Today, it includes Sony-Ericsson (T68i, K700i, P800, P900, P910, T610i, T630, Z600, Z1010), and Nokia (3650, 3660, 5140, 6230, 6670, 6600, 6820, 7610, 7650, 9210, 9300, 9500). Most high-end Symbian devices support SyncML.
Assuming you’re using devices that support SyncML, no client provisioning is necessary, and client management costs are very low. Users have a web inteface to set specific parameters, such as the size of emails that are synchronized, and the period of calendar event synchronization.
In short, SyncML-based synchronization is a powerful technique for mobile device connectivity. It’ll become widespread.