It's much much cheaper to just purchase a VPS or ATOM Dedi and install iRedMail and SOGo. You don't get Docs of course but 80% of the customer's I know don't use Docs, only email and Calendar.
I can't say I will ever switch over to Outlook though since Microsoft is notorious for charging for everything sooner or later and ruining a lot of things. They botched up Skype now that they have it also.
I can't say I will ever switch over to Outlook though since Microsoft is notorious for charging for everything sooner or later and ruining a lot of things. They botched up Skype now that they have it also.