Microsoft Exchange Hosted Services, Earlier FrontBridge, is an email filtering Which was previously developed by the Company FrontBridge Technologies Which was acquired by Microsoft in 2005

FrontBridge Technologies began in 2000 as Bigfish Communications in Marina del Rey, California. The service is sold directly and through partnership with Sprint Nextel. On 30 March 2006, Microsoft announced new branding, a new licensing model and the road map for Microsoft Exchange Hosted Services, formerly known as FrontBridge Technologies Inc. With the announcement, four new products were introduced.