Mozilla Releases Thunderbird 1.5 Email Client

New Version of Acclaimed Email Client Delivers an Even Better and Safer Email Experience

MOUNTAIN VIEW, Calif. - Jan. 12, 2006 - Mozilla Corp. today announced the launch of Thunderbird 1.5, the latest version of its full-featured email client, available now as a free download at www.getthunderbird.com. Renowned for its intelligent spam filters and customizable views, Thunderbird has attracted more than 18 million downloads since its launch in December 2004. Thunderbird 1.5 is the culmination of a year’s worth of feedback from its users and delivers a safe, fast and easy-to-use email solution.

“With a host of new and improved features, Thunderbird 1.5 provides users with a robust, free email alternative,” said Christopher Beard, vice president of products at Mozilla Corp. “Thunderbird enhances the overall email experience, adding anti-phishing capabilities to help keep people safer, while also integrating and simplifying access to new technologies, such as RSS (Really Simple Syndication).”

Better than Ever

Thunderbird 1.5 features several enhancements, including:

Thunderbird 1.5 is available immediately as a free download from www.getthunderbird.com.

About Mozilla

Mozilla Corp. is charged with the development and deployment of Mozilla technologies and products around the globe. The corporation is a wholly-owned subsidiary of the Mozilla Foundation, and continues to further the mission of the Mozilla project to preserve choice and innovation on the Internet. For more information about Mozilla, please visit: www.mozilla.com.