Hi, we've done some work to make our service compatible with the N900 and at this point I think it works quite well (sadly we don't yet have an actual N900 to test with). I'm also interested to know if the N900 can do multiple calendar sync like the iPhone. Register for a free acct at www.nuevasync.com (use the free trial option to enable email and tasks sync testing). Please send reports of any problems to our forum (I may not see replies here quickly), or via our support system.