You might remember the commotion surrounding Goodmail's announcement that its CertifiedE-mail" program had been embraced by AOL and Yahoo. The case put forth by Goodmail at the time was that the increased trust generated by an e-mail that had been certified as legitimate, the guarantee of delivery, and the promise that HTML would render properly without fail, would result in higher click-throughs, increased profits, and improved ROI that would more than make up for the additional cost of delivery.

Today, Goodmail claims it has solid proof in the form of a number of case studies the company shared with Bill McCloskey. Read more here.