Old school e-mail marketing company e-Dialog, established in 1997, knows there’s even more money is in mobile marketing. Today, the company announced its acquisition of M3 Mobile Marketing, a Philadelphia-based company which offers a full-service mobile marketing model.

“The mobile arena holds so much promise and many marketers are excited but simply don’t know where to start,” said John Rizzi, president and CEO of e-Dialog, in a statement. “Nearly all mobile users are carrying a text-enabled phone right now,” he continued, “To ignore that reach would be missing a tremendous opportunity.”

M3 Mobile, founded in 2007, provides mobile strategists, best practices, reporting & tracking and data integration for its mobile marketing clients.

“We’re catering to an active audience,” said Jeff Hennion, executive vice president and chief marketing officer, e-commerce, of Dick’s Sporting Goods. “That means our marketing campaigns must be multifaceted to reach them with relevant messages wherever they may be. Mobile marketing ensures we can take full advantage of the reach the mobile channel offers and create a continuous relevant dialog with our customers.”

M3 will now operate as a subsidiary of e-Dialog. e-Dialog is a wholly owned subsidiary of GSI Commerce, a provider of services that enable e-commerce, multi-channel retailing and interactive marketing for large, business-to-consumer enterprises in the U.S. and internationally.