For businesses needing a complete local and remote e-mail solution. It can serve as a total IMAP4 or POP3 client/server e-mail solution, as well as provide remote Internet access to your existing network e-mail. It also offers gateway support, allowing local e-mail users to send messages over the Internet and other gateways. Infinite InterChange supports IMAP4, POP3, Web/HTML, and Handheld Device Markup Language (HDML). HDML allows users to communicate via cellular services that use Unwired Planet's UP.Link gateway such as AT & T PocketNet Service.