ADVISORY/Cloudmark Demonstrates How to Protect the Heart of the Enterprise From Spam With New Breakthrough Technology at Email Technology Conference.

Business Editors/High-Tech Writers

ADVISORY...for Wednesday-Friday (June 16-18)

Email Technology Conference

Booth #5

--(BUSINESS WIRE)

Cloudmark Inc.

Who:    Cloudmark(TM) Inc. delivers tailored anti-spam solutions for
        desktop, small and medium businesses (SMBs) and large
        enterprise customers.

What:   Email Technology Conference attendees are encouraged to join
        Cloudmark at the following events to learn about developments
        in the war against spam:

        --  Email Abuse Roundtable -- This invitation-only event
            hosted by John Levine, co-chair of The Anti-Spam Research
            Group, will take place on Wednesday, June 16th from
            4:00-6:00pm. Cloudmark CEO Karl Jacob will be featured as
            an expert panelist.

        --  Technology Spotlight: Beyond Spam -- Chris Shipley,
            executive producer of DEMO conferences and renowned
            technology analyst, invites Cloudmark CEO Karl Jacob to
            participate in an exclusive presentation of the company
            and its new technology to ETC attendees. The session will
            occur on Thursday, June 17th from 10:30-11:00am in The
            Palace Hotel's Grand Ballroom.

        --  Press Conference: Directly following the Technology
            Spotlight, Cloudmark will make a special not-to-miss
            announcement at 11:00am. Media will also have the chance
            to hear from a Cloudmark enterprise customer, as well as
            IDC's Research Manager of Security Products, Brian Burke.

        --  Breakout Session: Managing the Clutter -- Gartner analyst
            Betsy Burton moderates this panel, which includes expert
            perspective from Cloudmark CEO Karl Jacob and other
            industry leaders. The session will occur on Friday, June
            18th from 11am-12pm in The Palace Hotel's Pacific Heights
            room.

When:   Wednesday, June 16 to Friday, June 18, 2004

Where:  The Palace Hotel
        2 New Montgomery Street
        San Francisco, CA.

        ETC attendees can visit Cloudmark at Booth #5 in The Palace
        Hotel's Sunset Court for general discussions and
        demonstrations.