I have a corporate client currently using IMAP mail hosted on Bluehost.com. He wants to move to hosted Exchange since he needs to have better mail & contact synching b/t his devices and he also wants to share calendars w/ his 3 key employees. Since Bluehost is an all-Linux provider, they don't offer hosted Exchange. The other thing is that he has about 35 sales guys that do not really need Exchange, so I was thinking of moving him to a hosting provider that offer a hybrid of Exchange as well as less expensive IMAP accounts.
Both Intermedia & Rackspace offer this hybrid option. I'm thinking of moving him to Rackspace. Although I have more experience with Intermedia, I did work with Rackspace for a former client a couple of years back and they have a good interface system and really good US-based tech support.
The other option is to move all their users over to Office365, even though it's really just 4 employees that need full Exchange functionality. At $4/user/month, that would cost him about $156/month. Rackspace charges $10/month for Exchange accounts and just $2/month for IMAP email. So it would be less expensive. But then there are extra fees for ActiveSync and for going over the basic amount of storage space, so in the end don't know if would be a significant price difference.
Although most of his employees are running Windows, the owner of the company is an all-Mac guy. He runs Mac Mail on his MacBook and Outlook 2011 on his office iMac.
Anyway, would appreciate other expert's feedback and suggestions in picking the most appropriate email hosting provider.
BTW, Google Apps is off the table b/c this client knows someone who had a very bad experience migrating to Google Apps. I myself have not been too impressed with Google Apps thus far. Seems to work very well if you strictly use the webmail interface, but once you introduce a mail client like Outlook or Mac Mail into the picture, all sorts of issues start to crop up.