CONSTANT CONTACT® IS FIRST SENDER ID-COMPLIANT EMAIL MARKETING SOLUTION FOR SMALL BUSINESS

Improves Deliverability of Permission-Based Email for Constant Contact Users by Differentiating Legitimate Email from Spam

Waltham, MA. - August 31, 2004

Constant Contact, the leading permission Do-It-Yourself Email Marketing(TM) service for small and medium businesses (SMBs) and associations, today announced it is the first SMB email marketer to implement the Sender ID Framework on behalf of all of its customers.

Sender ID is a framework designed to authenticate the source of email by confirming that a message is coming from the domain it claims to be from. By preventing domain spoofing, Sender ID helps protect the identity and reputation of senders and helps guard email users from spam and phishing scams by providing a method for filters and ISPs to verify the source of email. Constant Contact's compliance with the Sender ID framework ensures that any email sent by Constant Contact customers can be confirmed as truly coming from that customer's domain, resulting in stronger brand protection for our customers and improved deliverability of permission-based email.

"Our primary goal is to ensure the delivery of our customers' permission-based email," said Margaret Olson, CTO Constant Contact. "Email authentication solutions, like Sender ID, are a big step forward for the industry as a whole because they reduce the amount of spam in everyone's inbox, letting the legitimate email shine through and increasing the value of email for senders. Constant Contact will continue to contribute to evolving standards to ensure that small businesses benefit from new solutions to the spam problem."

"Sender ID is a widely applicable solution that covers the full spectrum of email senders both large, and small," said Craig Spiezle, Director of Industry and Partner Relations, Microsoft Safety Technology and Strategy Team. "We are thrilled that Constant Contact is supporting Sender ID and adapting it appropriately for small businesses. Together, we can help ensure that small businesses maintain full network citizenship equal to that of larger organizations."

The Internet Engineering Task Force (IETF) is currently evaluating the Sender ID framework drafted by Microsoft Corp. and Meng Wong of pobox.com as a potential industry standard for email authentication to address the domain spoofing problem. For more information about Sender ID, visit www.microsoft.com/senderid.

About Constant Contact
Constant Contact is the leading permission Do-It-Yourself Email Marketing service for small and medium businesses (SMBs) and associations. Constant Contact is a Web-based email marketing solution that enables smaller organizations to easily create and send professional HTML email newsletters, promotions, announcements and more with no technical expertise required. Designed and priced for SMBs, Constant Contact is affordable, easy-to-use and includes a free 60-day trial at: www.constantcontact.com. The service is marketed through a wide variety of channel partners, resellers and affiliates including Amazon.com, AOL, Interland, IBM, Inc.com, Intuit, Network Solutions, Overture, PayPal, Pitney Bowes, Staples.com, Switchboard and ValueWeb. Constant Contact is a Deloitte & Touche New England Fast 50 company, funded by Morgan Stanley Venture Partners, Commonwealth Capital Ventures, Longworth Venture Partners and Hudson Ventures. For more information, please call 781-472-8100.

Please direct all press inquiries to:

Rosalind Morville Constant Contact 339-222-5772 rmorville@constantcontact.com