http://get.liveatedu.com/Education/Connect/: This is Microsoft's program that is similar to Google class emails:
They consider it a collaboration platform, very comparable to Google Gmail and Google Docs. Click the link above and then view the short video that gives you a little information.
"Looking for innovative solutions for keeping your students connected? Learn about Live@edu, Microsoft’s newest platform for delivering student and alumni email, communication and collaboration services. View Video (29.2mb)"