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ZixIt and McAfee.com Announce ZixMail Now Available on McAfee.com Web Site; McAfee.com Offers ZixMail as Exclusive Provider of Secure Email

DALLAS--(BUSINESS WIRE)--Aug. 15, 2000--ZixIt Corporation (Nasdaq:ZIXI) and McAfee.com (Nasdaq:MCAF), world's largest security application service provider, announced today that ZixMail(TM) is now available through www.mcafee.com.

ZixMail, ZixIt's secure document delivery, private email, and message tracking service, is featured as McAfee.com's exclusive provider of secure email.

"As the industry-leading provider of Web-based security solutions for personal computer users, we are very pleased to offer our customers another category-leading product," said Patti Dock, vice president, of marketing at McAfee.com. "ZixMail, offering secure email and document delivery, perfectly complements McAfee.com Clinic and McAfee.com Personal Firewall to offer personal computer users one-stop shopping for all of their online security solutions."

By integrating its online PC utilities with a broad array of other online services, McAfee.com has become one of the Web's most popular destinations. Media Metrics lists McAfee.com among the top 50 most visited sites on the Internet and the site appears regularly in the popular and trade press on lists of "best sites."

David P. Cook, chairman and chief executive officer of ZixIt Corporation, said, "McAfee.com is constantly breaking new ground, and we are pleased to be included in their suite of leading-edge Internet security applications. ZixMail now offers email users the ability to send secure messages to anyone in the world using their existing email programs and addresses. ZixMail is available in both stand-alone and Microsoft(R) Outlook(R)-integrated versions."

In the near future, ZixMail users will be able to scan attachments with McAfee.com's "Scan Now" virus-scanning software. McAfee.com's virus-scanning technology will also be used by SecureDelivery.com(TM), ZixIt's new Internet secure-messaging portal.

ZixIt Corporation provides products and services that enhance security, privacy, and convenience for users of the Internet. Principal services include: SecureDelivery.com(TM) -- an Internet secure-messaging portal, and ZixMail(TM) -- a secure document delivery, private email, and message tracking service that enables users worldwide to easily send and receive encrypted and digitally signed communications using their existing email systems and addresses. For further information, visit www.zixit.com or contact investor relations at 214/515-7357.

CONTACT: ZixIt, Dallas

             Investor Contact:
             Beverly V. Fuortes, 214/515-7357
             invest@zixit.com
             or
             Press Contact:
             CDR
             Cindy Lawrence, 212/419-8343
             cindy.lawrence@citigatedr-ny.com