Microsoft has recently released an updated version of the Service Manager Exchange connector. The connector allows Service Manager to monitor one or more Exchange mailboxes and create/update various work items in Service Manager.
The new version supports Service Manager 2012 SP1 CU2 and is not supported on earlier versions.
Besides the actual connector a deployment guide is available. See more at http://www.microsoft.com/en-us/download/details.aspx?id=38791