YesMail Launches Email List Management Services

April 11, 2001

YesMail(TM), a premier direct email marketing solutions provider, today announced the launch of its email list management solutions business - - YesMail's List Management Services enable online publishers and list owners to outsource the development, maintenance, sale and delivery of their opt-in database. In return, YesMail offers a robust technical solution, combined with broad distribution and direct marketing experience to maximize the value of lists under YesMail management. Marketers working with YesMail will gain access to an expanded array of branded and targeted permission-based email marketing lists, enabling them to reach larger, more highly targeted audiences online.

"Our new email list management service offerings enhance YesMail's position as a complete direct email marketing solutions provider," said YesMail Chief Executive Officer Dave Menzel. "By efficiently managing lists and identifying new marketing opportunities for those lists, we help clients make the most of their list assets."

List Management Services

Through its email list management services, YesMail can help companies develop a permission-based email marketing list, or manage and expand existing lists. As a result, YesMail creates additional value for permission email list owners by leveraging their database to generate revenue, and by delivering benefits to list members through relevant offers and promotions specific to members' interests.

List management clients have a dedicated list manager, who actively promotes and sells the list. List managers also work with clients to determine best practices for opt-in email programs and make recommendations for customer retention and privacy standards. YesMail also provides clients access to list data via the Internet through its state-of-the-art YesConnect technology.

"YesMail has helped expand our email list to more than 400,000 names and freed us from all the management issues related to building and managing email lists," said Karen DeMars, president and cofounder of eCRUSH.com, a leading Internet relationship site. "YesMail's expertise in direct email marketing makes it a vital partner for us as we seek to make the most of our email list assets."

YesMail List Management Services is now managing 13 branded lists, totaling more than 8 million names. Clients include AllCommunity, eCRUSH, GiantRewards, JobsOnline, WinDough.com, OfficeMax.com, MapBlast!, Mplayer.com, Spedia.com, Snowball.com and StoneAge.com.

New Marketer Options

YesMail also is expanding options for marketers, who now have broader access to branded and targeted permission-based email marketing lists. YesMail can develop customized lists for marketers from the branded lists, as well as the 16 million-member YesMail Network of individuals who have elected to receive marketing materials that match their interests.

About yesmail.com

yesmail.com is a premier direct email marketing solutions provider. YesMail's innovative email marketing solutions and expertise enable companies to acquire and retain customers, sell products and services and drive loyalty by targeting prospects and delivering personalized messages via email - one of the most cost-effective mediums available in the industry. YesMail delivers to its members offers, promotions and information about the products and services that match their interests, while protecting their personal information. YesMail is a majority-owned operating company of CMGI, Inc. For more information about Chicago-based YesMail, see www.yesmail.com or call 1-877-YESMAIL.

This release contains forward-looking statements which address a variety of subjects including, for example, the expected benefits of yesmail.com's email list management services. The following important factors and uncertainties, among others, could cause actual results to differ materially from those described in these forward-looking statements: yesmail.com's products and technologies may not successfully interoperate with those of third parties; adoption of new laws and regulations affecting the provision of Internet advertising services, including laws and regulations covering privacy, pricing and content; yesmal.com's success depends on the marketing and advertising needs of its customers and the continued demand for Internet advertising in general; yesmail.com's success depends on the continued and increased acceptance of its website and the Internet as a medium; and increased competition and technological changes in the markets in which yesmail.com competes. For a detailed discussion of these and other cautionary statements, please refer to CMGI's filings with the Securities and Exchange Commission, including CMGI's Annual Report on Form 10-K for the most recently ended fiscal year.

YesMail, yesmail.com and the YesMail Network are trademarks of yesmail.com, inc. All other products, services and entities mentioned may be trademarks or service marks of their respective owners.

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CONTACT: YesMail, Stephanie Walsey, 312/423-5247, stephaniew@yesmail.com

Business Editors/High-Tech Writers, CHICAGO—(BUSINESS WIRE)—April 11, 2001