Business users are increasingly on the move and many of them want to take their Exchange mailbox data with them. Exchange Server 2007 provides built in mobile access through Exchange ActiveSync. Users can synchronize their email messages, contacts, calendar, and task data directly to their Exchange ActiveSync-enabled mobile device. Users can even access some Unified Messaging data such as voice mail messages on their device by synchronizing the e-mail message with the voice mail file attached. Through the installation of a third party add-in, they may even be able to view the faxes