AT&T Business Messenger is a mobile messaging tool for the workplace. Business Messaging allows you to do one-to-one chat, group chat and even broadcast messages to coworkers enhancing productivity and making your business communications easier. Features Include: • Broadcast messages to 20,000 recipients • Create groups messages on the fly with the coworkers • One-to-one chat • Message delivery confirmation • Integration from other protocols supported by AT&T Business Messaging (SMTP, SNPP, WCTP, TAP) • SMS fallback Only Available for AT&T Subscribers in the U.S.