I own a Mac based business, we basically use Mac computers and iPhones for 90% of my business. I had fought with Microsoft Exchange Email for years trying to get it to work with Mac’s. They finally got it working but I still had to use the Exchange interface to work it. What a pain in the butt. I found out through a friend, that this company had put out a Beta Test system last year so I switched. Couldn’t be any worse than Microsoft products, it has been AWESOME! The email just works, really works! I get it all with little to no spam. When I put in a new contact in my MacBook, it pops up in iPhone contacts, and when I add a new Calendar Event, the rest of my team sees it. YES!, finally we all work together. I just got an email saying the Beta Test is over and they have launched, so GO… RUN and get this if you own a small business and use Apple products. Oh, and it only costs $ 5.00 per mailbox.