Goodmail Systems on Monday announced that 15 major email service providers have agreed to use its email accreditation service after AOL quietly launched Goodmail's CertifiedEmail last week after months of controversy, DM News reports. More are likely to get on the bandwagon since 15 of the 25 major players, such as Epsilon Interactive and ExactTarget, have already signed up.

The ESPs that have signed up to offer Goodmail's CertifiedEmail to their corporate customers include BlueStreak, Acxiom Digital, e-Dialog, Epsilon Interactive, ExactTarget, Exmplar, Harte-Hanks Postfuture, Premiere Global Services, Responsys, Silverpop, SmartDM, TailoredMail, Yesmail, Whatcounts, and Zustek.

Those ESPs account for 50 billion email messages a year, according to John Ouren, SVP of sales and business development for Goodmail. "We've got what we estimate to be 70 percent of the leading full-service providers. And in terms of the top 25, we're in discussions with everyone else," he said.

The CertifiedEmail system consists of two components. First, an accreditation and reputation monitoring service validates that senders are legitimate corporations managing the best opt-in email practices with the lowest consumer complaint rates. Second, approved senders have their messages individually stamped with a unique cryptographically secure token that ensures consumers that the messages are from the represented sender.

"CertifiedEmail technology provides an entirely new approach to the growing problem of phishing and deliverability in email," said Bill Nussey, CEO of Silverpop. "We are very happy to be able to offer our clients this additional method to certify trusted email communications."