In its ongoing war for the market share and mindshare of the enterprise wireless messaging market, Good Technology on Monday announced that Handspring (Quote, Company Info) and Cingular will support its newly released GoodLink 2.0 real-time synchronized system designed to work with enterprise platforms like Microsoft Exchange.

The announcements come at a critical time for the Sunnyvale, Calif.-based company, which is battling market leader Research in Motion (Quote, Company Info) (RIM) of Canada, the manufacturer of the popular BlackBerry wireless e-mail hardware and software product. RIM continues to be the leader in the wireless messaging market with a total of 615,000 subscribers to its service as of April.

However, amid the competition, the overall market is shrinking. The handheld device market is having a difficult time in 2003, according to IDC, which said 2.45 million handheld units were shipped during the first quarter -- a slide of more than 21 percent over last year.

Still, Yankee Group acknowledges the enterprise e-mail market specifically could still grow. "The U.S. market for corporate wireless e-mail solutions will grow from slightly more than 1 million users currently to more than 9 million users in 2007. This represents a 26 percent penetration of wireless e-mail among total mobile workers in the final forecast year. Associated revenues will grow more than 300 percent from $837 million in 2002 to almost $3.5 billion in 2007," the Yankee Group study said.