Entourage, like Outlook, is a Microsoft product for email… and it can connect to a Microsoft Exchange server directly using Microsoft’s proprietary API, too. However, Entourage can not do everything Outlook can. It’s just a close approximation. That said, you could choose to use Apple Mail if you want. It can pull emails from different accounts on different servers. And it also has a rule system. Entourage is not free. Apple Mail is free (comes bundled as part of Mac OS X). — My suggestion: try Apple Mail for now. If you end up needing advanced Exchange-based functionality (usually in a corporate environment), then look at shelling out the money for Entourage.