Hieronder de lijst met Features die ondersteund worden door de verschillende versie’s van Windows Mobile
| Operating system | Features |
| Windows Mobile 6.1 | · Direct Push · HTML e-mail support · Message flags · Quick message retrieval · Task synchronization · Global address book lookup · Enhanced calendar views · Meeting attendee information · Out of Office management · Exchange search · Windows SharePoint Services and Windows file share (UNC) document access · Enforcement of Exchange ActiveSync mailbox policies · Remote device wipe · Basic authentication · Integration with Internet Security and Acceleration (ISA) Server · Certificate-based authentication · S/MIME support (with Exchange 2007 SP1) · Device storage card encryption · Support for rights management |
| Windows Mobile powered devices with the Messaging & Security Feature Pack Windows Mobile 6.0 en lager | · Direct Push · Global address book lookup · Task synchronization · Enforcement of Exchange ActiveSync mailbox policies · Remote device wipe · Secure Sockets Layer (SSL) encryption · Basic authentication · Integration with ISA Server · Certificate-based authentication · S/MIME support (with Exchange 2007 SP1) |
| All Windows Mobile powered devices | · Synchronization of e-mail messages, calendar, and contact data · SSL encryption · Basic authentication · Integration with ISA Server |