Press Releases

Stalker Software and Mailshell's Anti-Spam Solution Gains Rapid Adoption Among Linux-Based Corporations

Customers Cite Accuracy and Increased ROI; Rapid Deployments in the Education, ISP, Healthcare and Media Markets

LINUX WORLD, San Francisco, (August 4, 2003) - Stalker Software, Inc., the technology leader in messaging solutions, and Mailshell, developer of the most accurate and easy to integrate anti-spam engine, today announced that more than 30 corporations have purchased and deployed the Linux version of the solution. The joint Stalker Software/Mailshell Linux plug-in, released in April of this year, which integrates Mailshell's spam-catching engine with CommuniGate Pro, improves an enterprise's ability to intercept and block unsolicited e-mail. In total, more than 100 organizations running Linux, Windows, Free BSD, Solaris, AIX and Mac OS X have purchased and implemented the solution within the first 90 days of product availability.

"Business users wrestle with a flood of information today. The time it takes to deal with unsolicited email makes knowledge harder to attain and can cause a financial strain on corporations due to the internal development of expensive spam filters," said Tim Sloane, analyst, Sloane Consulting of Valley View Ventures. "An integrated solution such as the Stalker Software/Mailshell Linux plug-in is easier to install, enables corporations to consume fewer system resources and offers powerful spam prevention algorithms that IT departments can rely on."

ISP provider Digicon Communications has been using CommuniGate Pro for two years and recently deployed SpamCatcher into the messaging platform. "We've taken over numerous clients based on the fact that we provide a reliable and secure email platform with an extremely accurate filtering engine," said Russell Husling, vice president of Digicon Communications. "The joint solution provides the most bang for the buck. One of Digicon's servers, running both CommuniGate Pro and SpamCatcher, has more than doubled our ROI, greatly strengthening our presence in the marketplace." Other customers are impressed by SpamCatcher's intelligent filtering system.

The SpamCatcher engine identifies unsolicited email at the server level and integrates seamlessly into the CommuniGate Pro platform. SpamCatcher uses more than a thousand spam-blocking rules, including pattern matches, heuristic functions and proprietary and third-party databases. Complex algorithms are applied to compute the probability that each piece of e-mail is spam. SpamCatcher also creates a fingerprint ID for every e-mail message and compares it to existing fingerprints in its databases in order to continuously analyze new spam, create new rules and adjust the weighting of existing rules. Customers can opt to receive scheduled or real-time rules updates.

"Our joint solution with Stalker Software has been exceptionally popular among Linux-based corporations due to its ease of use and seamless integration within customers' existing applications," said Tonny Yu, CEO of Mailshell. "Integrating our core engine into common messaging and security applications eliminates the need for enterprises to implement third-party solutions, while providing extremely accurate anti-spam functionality."

"Since effective email communication is a core ingredient of a successful organization, all types of businesses should definitely consider an anti-spam solution to improve communication and productivity," said Jacinta Tobin, vice president of Business Development at Stalker Software. "Our joint solution has been popular for enterprises in various industries, from ISP and educational institutions to medical technology and advertising corporations."

Supporting more than 30 hardware and operating system combinations including UNIX, Windows, AS/400, mainframes and Mac OS X, CommuniGate Pro offers the most advanced, robust messaging solution, optimized to provide email, collaboration, wireless and unified messaging all on a single message store. Because of the product's open standards-based architecture, CommuniGate Pro provides high-performance integrated messaging, supporting many types of content on a centralized platform efficiently and reliably.

About Mailshell
Mailshell is the creator of SpamCatcher, the easiest solution to spam. The company's products include anti-spam software developers' tools for OEM customers as well as a suite of enterprise and personal anti-spam products. Mailshell recently earned an "Editor's Choice" award in PC Magazine's review of spam filters, and has been dubbed "priceless" by Forbes magazine, "excellent" by the Associated Press and "easy to use" by CNET. Mailshell is based in Santa Clara, CA, with an additional office in San Francisco. For more information visit

About Stalker Software
Founded in 1993, Stalker Software, Inc. is based in Mill Valley, California. Stalker Software is the technology leader in messaging solutions for more than 30 major computer platforms. The company's core technology merges security, reliability, scalability and a wide range of integrated services, with ease of deployment and maintenance. More than 5000 customers worldwide, ranging from global telcos and ISPs to educational institutions and corporations, service millions of accounts with CommuniGate Pro.

For more information about Stalker Software, Inc. and its products, please contact Alice Liptrot, director of sales and marketing at (800) 262-4722 or (415) 383-7164; by fax at (415) 383-7461; or email at Visit the Stalker Software Web site at http://

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