Sync'Em requires:

• OS X 10.4, 10.5 or 10.6
• Although Sync'Em seems to work with 10.7, we've not done any formal testing. In addition, if you're using iCloud, you need to consider that iCloud is the "master" copy (which is different from previous situations where your system was the "master"). The following Knowledgebase Article may help.
• Exchange 2007 SP1 with WS (Web Services) enabled (which is the default)
• Exchange-server security must allow logins/access via Sync'Em
• Note - 2009-09-15: Microsoft's Extended Protection for Authentication update can prevent Sync'Em from authenticating.
• Exchange 2003 is not supported
• if the copyright date on the OWA (Outlook Web Access) login page indicates 2007, then it is probably Exchange 2007

Prior to buying, please download, install and try Sync'Em to verify that it functions in your environment — and if it doesn't, contact us and we'll help get it working.