Upoc Groups
Join friendly SMS mailing list groups such as "Hot Bartenders" or "NYC celebrity sightings" and alert other members in a snap. Upoc stands for "Universal Point of Contact".

mHook - email forwarding
reformats and sends your regular email to your cell phone. Filtering available to limit forwarding to the most important messages. Free for a limited time.

Driver2Driver.com
Send messages to drivers on the road, using their licence plate number as an email.

Unified Messaging
Offers E-mail, Fax, Voicemail, SMS, Phone all in one inbox. Delivers

eSMS.com
Offers various SMS services including group SMS managing.