First announced earlier this year, Motorola has finally made its Good Mobile Messenger 5 e-mail program available to enterprises looking for an alternative to BlackBerrys. How does it compete?On any number of levels, Good 5 is just as, er, good, as RIM's mobile e-mail system. Need push e-mail? Check. SMS, MMS, personal and work e-mail all delivered to one in-box? Check. Full calendar support? Check. Bolstered security? Check. Compatibility with Microsoft Office documents/attachments? Check.

There are but a few of the upgrades to Good, which Motorola purchased last year for $500 million. There also are a number of updates for IT admins to take advantage of. Admins will be able to enforce mandatory applications, lock down the hardware (such as the Wi-Fi, Bluetooth camera, and SD slots), and enforce advanced passwords and encryption.

Perhaps one of the coolest new features is an integrated RSS feed that runs across the button of the screen. The feed can be managed by IT, and personalized by the user. Uses can click on headlines as they stream across the screen and be taken directly to the full content, where it can be shared.

By pitting its software against RIM's, Motorola has to improve its smartphone offerings if it truly wants to be an end-to-end supplier like RIM. Because Good 5 works on Windows Mobile devices, though, it can support a wide range of devices and form factors already on the market.