SmarterMail IS Microsoft Exchange because it is the only other email server on the market with native support for MAPI, the protocol that powers Exchange and Outlook. That means anything you can do on Exchange, you can do with SmarterMail: no plug-ins, no additional software, it just works! SmarterMail offers all of this, and more, for a FRACTION of the cost of Exchange. And unlike Exchange, features like audio/video group chat and Team Workspaces, which offers audio and video conferencing with screen sharing, are included at no extra charge.