Cloudmark-Protected ISPs, Including Earthlink, Comcast, Cox, Charter, Telus, THUS and Fastweb, Join Large Number of Receivers Relying on Sender Score Certified.

New York and San Francisco–January 24, 2008
–Return Path, the leading provider of global e-mail deliverability tools and services, today announced the Sender Score Certified whitelist will be expanding to cover more than 1.2 billion e-mail inboxes. When legitimate, qualified e-mail senders send messages to ISPs and filtering companies that utilize Sender Score Certified, those e-mails will be given preferential treatment toward inbox placement.

Sender Score Certified bolsters consumer confidence that when signing up for an e-mail newsletter or e-mail communication from a company enrolled in the program, those e-mails will be successfully delivered and not misidentified as spam. Only highly-reputable organizations that have passed a rigorous screening process and maintain the highest industry standards with their e-mail programs qualify for Sender Score Certified.

While ISPs and other receivers continue to battle the onslaught of spam, large and small organizations often struggle to make sure consumers receive their e-mails and to prevent legitimate e-mails from being misidentified as spam. Sender Score Certified whitelist offers both ISPs and e-mail senders an indispensable tool in this ongoing struggle. ISPs use the Sender Score Certified whitelist as a tool to easily identify legitimate e-mail and e-mail Senders use Sender Score Certified to make sure their e-mail reaches their customers, often with images and links enabled.

Receivers that accept the Sender Score Certified whitelist include, among others, Windows Live Hotmail, Time Warner Cable, GoDaddy and soon Yahoo!. Sender Score Certified also covers thousands of businesses using filtering solutions from Spam Assassin, Barracuda Networks and Cloudmark. Cloudmark is the latest e-mail spam filtering provider to choose and fully integrate Sender Score Certified. Cloudmark’s North American ISP customers include Earthlink, Comcast, Cox Communications, Charter, Telus and Cincinnati Bell. Cloudmark’s global base of service provider customers includes THUS, Tele2,, Fastweb, NTT OCN and NEC BIGLOBE. Sender Score Certified is also used directly by many major corporations and educational institutions and remains free for non-profit organizations, increasing the deliverability of e-mails sent by registered non-profits.

“At Cloudmark, our goal is to deliver the highest possible level of filtering accuracy to service providers and as part of that effort, we are committed to helping ISPs precisely distinguish legitimate e-mail from spam,” said Jamie De Guerre, Chief Technology Officer at Cloudmark. “Return Path does an excellent job ensuring that Sender Score Certified organizations are, in fact, legitimate senders and adhere to best practices in e-mail distribution. As a result, Return Path’s Sender Score Certified helps Cloudmark better ensure that true spam is blocked while legitimate e-mail gets delivered correctly to recipients’ inboxes.”

“Sender Score Certified is an important component of the e-mail deliverability program for Tremor and Vocalpoint, Procter & Gamble’s word-of-mouth marketing businesses,” said Stephen Surman, Group Manager, Relationship Marketing at P&G. “There is no question that it has had a significant impact on our inbox placement rates. Sender Score Certified also provides visibility into our e-mail reputation at all times and we’ll know promptly if and when we might have an e-mail reputation problem that needs to be addressed.”

“With Sender Score Certified, we’ve worked hard to build a solution that gives legitimate mailers increased delivery to now more than 1.2 billion mailboxes,” said Matt Blumberg founder and CEO, Return Path. “Mailers don’t have to pay a “postage” fee for every e-mail to reach consumers inboxes with Sender Score Certified. Once mailers are accepted into Sender Score Certified, they can spend much less time dealing with deliverability issues of their e-mail and more time planning, designing and testing profitable e-mail marketing campaigns.”

About Sender Score
Sender Score, Return Path’s Delivery Assurance Solutions division, helps mailers get more e-mail delivered to the inbox by giving them the tools and insight to monitor and diagnose deliverability failures, build better e-mail reputations, and minimize or prevent future blocking, filtering, and rendering problems. Sender Score works with both the sending and receiving communities to bring more transparent standards to e-mail delivery and filtering. Return Path’s delivery assurance solutions include Sender Score Monitor, Sender Score Manager, and the Internet’s most widely used whitelist, Sender Score Certified. For more information, visit Get your reputation score at

About Return Path
Founded in 1999, Return Path is an e-mail performance management company dedicated to helping its clients build better relationships with their customers, generate higher response rates, and achieve significant returns on their investments from their e-mail programs. More than 1,500 companies currently use Return Path’s services to generate superior results from their e-mail programs, taking advantage of Return Path’s pioneering innovations in deliverability, e-mail list quality solutions, customer acquisition, online market research, and best practices strategy. For more information, please visit

About Cloudmark
Cloudmark, Inc. is a global leader in carrier-grade messaging security, delivering the industry’s fastest, most comprehensive and most accurate real-time spam, virus and phishing protection for fixed and mobile networks. Cloudmark solutions combine highly sophisticated Advanced Message Fingerprinting™ technology based on innovative, high-performance algorithms and a Global Threat Network consisting of trusted reporters in 163 countries to provide security intelligence and filtering at all points in the messaging infrastructure. Cloudmark solutions currently protect more than 300 million mailboxes and the company works with more than 100 of the world’s largest service provider and mobile operator networks (including seven of the top 10 in North America), such as EarthLink, Comcast, Cablevision, Charter Communications, Cox Communications, NTT Communications, SprintNextel, Virgin Mobile and Swisscom, as well as hosted messaging providers, including domainFACTORY. Cloudmark is a privately held company headquartered in San Francisco with offices in London, Tokyo, Beijing and Hong Kong. For more information, please visit

Jeff Rutherford
Jeff Rutherford Media Relations
413 369 4128
[email protected]

Marisa Dulyachinda or Payal Cudia
Schwartz Communications, Inc.
[email protected]
(415) 512-0770

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