Mailtrust's Hosted Exchange 2007 solution, which supports ActiveSync for Windows Mobile devices, now offers that same functionality, including push e-mail, calendaring and contacts for iPhones with firmware 2.0 and higher installed. Exchange Active Sync maintains a secured connection between the Exchange Server and the iPhone so that when a new message or meeting invitation arrives, the iPhone is immediately updated. Mailtrust is in the process of developing options to sync the iPhone with its Noteworthy platform, a hosted e-mail solution that's not based on Microsoft Exchange.