ATLANTA, August 9, 2004 - Silverpop, a leading provider of comprehensive permission-based email marketing solutions, today announced its participation in Microsoft's upcoming sender authentication summit. Members of the Email Sender and Provider Coalition (ESPC), a group formed to fight spam while protecting the delivery of legitimate email, will join together on August 12 to meet with Microsoft's anti-spam, Hotmail, and MSN teams. As a member of the ESPC, Silverpop will participate in the summit, which will outline plans for "Sender ID," Microsoft's sender authentication protocol. Although there are several industry protocols for sender authentication, Sender ID will address the widespread problem of domain spoofing and provide greater protection against phishing schemes and spammers.

According to Microsoft, Sender ID will verify that each e-mail message originates from the Internet domain it claims to come from based on the sender's server IP address. Eliminating domain spoofing will help legitimate senders protect their domain names and reputations, and help recipients more effectively identify and filter junk email.

"As an email service provider, we look forward to the opportunity to hear directly from Microsoft what it has planned for Sender ID," said Stephen Guerra, Director of Deliverability Services for Silverpop. "Our goal is to achieve the best deliverability rates for our clients and being privy to the Sender ID plans before Microsoft implements them is key. We have already implemented SPF for our clients and will ensure that all of our clients are also in compliance with Sender ID as it evolves from SPF."

About Silverpop
Silverpop is a leading provider of permission-based email marketing solutions, strategy and services. Ranked in the Top 5 of all email marketing vendors by Jupiter Research in 2003, Silverpop helps marketers cultivate and maintain long-term strategic relationships with customers and partners by maximizing the potential of email as a relationship tool. Its flexible service model allows marketers to choose from full service, ASP or install and easily move between the three, making it an ideal solution for marketers at any stage of using email. Silverpop provides email marketing to industry leading companies including The Bombay Company, British Sky Broadcasting, Weather.com and more.