Microsoft's hosted Exchange solution provides email and collaboration services through hosted Exchange 2003 servers. It offers native mobility support for Windows Mobile devices using ActiveSync and support for other mobile devices through Fenestrae extensions. The solution allows operators to increase revenue, offers pay-as-you-go licensing, and provides scalable and secure email infrastructure that can integrate additional services. It provides value to both operators by exposing their branding and enabling tiered services, and subscribers by offering affordable predictable costs with rich email access on any device.