Jens,
It would make no sense for us to create our own protocol to connect Microsoft Outlook and SmarterMail.
Exchange Active Sync is a protocol we make available via SmarterMail. It is what every client on iOS/Android/Windows10 uses to get real-time emails, calendars, contacts etc. Microsoft Outlook also supports this protocol.
If you want his level of functionality, its as simple as flipping a setting on the server.
Installing and running a Microsoft Exchange server is an entirely different beast and 10x the costs and management.
We are also looking at implementing MAPI in a future version of SmarterMail. That will allow us to go beyond the limitations of Exchange Activesync and customers would be able to cho ose this method in Microsoft Outlook.
Hope this explains the differences?
Tim Uzzanti
CEO
SmarterTools Inc.
www.smartertools.com