Microsoft Exchange ActiveSync is a data synchronization protocol that enables over-the-air access to email, calendars, tasks, and notes from most mobile devices, including Blackberry, iPhone, Palm Pre, and Windows Mobile devices. In addition, Exchange ActiveSync enables SmarterMail users to have access their email, calendars, tasks, and notes while working offline.

What is it for:
Mobile devices ( Iphone, BlackBerry, Windows Mobile Devices )

What is it NOT for:
Email clients ( Outlook, ThunderBird )

How to purchase Microsoft Exchange Active Sync:
At this time you must contact our support by emailing [email protected] or visit our support site to enable for a user, this is a paid add-on starting at $4.79 per user per month.

How to setup with my mobile device:
SmarterTools Synchronization with SmarterMail 6 Guide.