Corvigo's Intent-Based Filtering Technology for Unwanted Email Continues to Gain Industry Acceptance Over Other Technique-Based Methods.

Business Editors/High-Tech Writers

MOUNTAIN VIEW, Calif.--(BUSINESS WIRE)--Nov. 19, 2003

Corvigo, the creator of Intent-Based Filtering(TM) (IBF) for unwanted e-mail, announced today that the company's product has continued to gain industry acceptance over other technique based solutions as evidenced by the company's growing customer base; distinguishing Corvigo's technology from any other solution on the market, Corvigo's IBF technology does not use any of the ineffective techniques including blacklists, white lists signatures, or rules.

Since the official market release, the company has grown its customer base by more than 100% per quarter -- adding clients including Purdue University, Interwoven (Nasdaq:IWOV), and OPEC to its roster. This news follows the company's most recent announcement that Corvigo met Network World's criteria for being enterprise ready by having one of the three lowest false positive rates achieved by any solution during the test. The beta version of IBF technology version 1.5 achieved this performance without using any of the management intensive techniques employed by the other solutions tested.

Corvigo provides e-mail filtering solutions based on its proprietary IBF technology. IBF technology uses Artificial Intelligence (AI) to determine the intent of information. The first application of Corvigo's IBF technology is the Company's MailGate(TM), a hardware appliance that sits behind a company's firewall and in front of its e-mail server. Unlike other solutions that send updates every minute or two, Corvigo's technology approach requires no updating -- cutting down on the management requirements associated with most anti-spam techniques currently on the market. Furthermore, while no other anti-spam technology can read and filter e-mail the way a human does when sorting through e-mail, Corvigo's patent pending technology-forward approach enables the company to address this simple concept. According to user studies, people sort mail as legitimate (family letters, bills, etc.), bulk (magazines, catalog subscriptions) or junk mail (unsolicited fliers, etc). Corvigo's technology solution is able to identify e-mail in the same fashion. As a result users receive important legitimate mail along with filtered message reports identifying junk and bulk mail that was kept on the MailGate and away from the mail server.

"Spam management is increasingly becoming a huge issue for businesses nationwide," said Jeff Ready, Corvigo CEO. "We are pleased to stand behind one of the fastest growing and effective solutions available on the market today."

About Corvigo

Corvigo is the creator of Intent-Based Filtering (IBF) technology for junk e-mail that can be licensed or purchased as an appliance. In the overcrowded junk e-mail solution marketplace, Corvigo offers a patent pending technology solution rather than the "me too" rules-based techniques that have proven to be ineffective, hard to update and expensive to maintain.

IBF technology is not a software or subscription-based service. It is an integrated plug-and-play technology that does not require system updates or routine maintenance to stop SPAM.

For more information on Corvigo, and its services, please visit www.corvigo.com.