High-end American bicycle manufacturer Trek Bicycle Corporation recently ran an e-mail campaign promoting the company's updated Madone brand bike. DMNews' Kevin McKeefery gets the lowdown from Casey Kohner, e-commerce manager at Trek Bicycle, and DJ Waldow, e-mail marketing account manager at e-mail marketing firm Bronto Software about the campaign's success, the unique e-mail campaign structure Trek has built with its retailers, and the working relationship between Trek and Bronto.