Tumbleweed Launches Secure Online Communications in Australia and New Zealand

Sydney, Australia - March 28, 2000 - Tumbleweed® Communications Corp. (Nasdaq:TMWD), a leading provider of secure Internet communication services, today announced the establishment of its operations in Australia and New Zealand to service the growing demand for secure e business communications in the Asia Pacific Region.

Jeffrey C. Smith, President and CEO of Tumbleweed Communications Corp said: "As increasing numbers of traditional businesses move their operations online, there is a critical need to provide a proven, secure online channel for communicating with their customers and business partners. Demand for Tumbleweed's Integrated Messaging Exchange and WorldSecure solutions worldwide has grown this year. We are very pleased to bring our products and services to Asia Pacific."

Tumbleweed's Integrated Messaging Exchange (IME) combines a powerful software platform and customised applications to establish a secure Internet communication channel between a business and its customers, suppliers and partners. IME securely transmits sensitive information to anyone with an email client and web browser.

Tumbleweed WorldSecure is a set of email management services that enable businesses to protect intellectual capital on the Internet. Businesses can set and enforce policies regarding security, distribution, monitoring and archiving of email, to control communication in the digital realm.

Australia/New Zealand regional director, Martyn Bartlett, will lead Tumbleweed's headquarters in Sydney. Bartlett joined Tumbleweed with twenty years experience, gained in marketing and management positions held in both Australia and Europe.

Martyn Bartlett Regional Director said "I am delighted that Tumbleweed has decided to lead its expansion into Asia-Pacific from Australia, in recognition of the demand for secure online communications in this region. We look forward to announcing how businesses in the Asia-Pacific region are using IME and WorldSecure."

Tumbleweed's presence in Australia will augment the company's global expansion strategy, following its recent rapid growth throughout the United States and Europe.

About Tumbleweed Communications Corp.
Tumbleweed is a leading provider of solutions for managing secure communication and collaboration to enable the business Internet. Tumbleweed's robust policy-based framework empowers organizations to safely share and protect critical information, increase customer loyalty and privacy and dramatically reduce costs. Tumbleweed is trusted by 1,000 blue-chip customers including American Express, Chevron, Datek Online, the European Union's Joint Research Council, First Union Wachovia, John Deere, Merrill Lynch, Nike, Northern Trust, NTT, Salomon Smith Barney, Travelers and US Food and Drug Administration. One hundred of the Fortune 500 are Tumbleweed customers. Tumbleweed Communications was founded in 1993 and is headquartered in Redwood City, Calif., with offices around the world.

Except for the historical information contained herein, the matters discussed in this press release may constitute forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those projected, particularly with respect to the security features of Tumbleweed's products and the activities of any third party. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "should," "potential," "continue," "expects," "anticipates," "intends," "plans," "believes," "estimates," and similar expressions. For further cautions about the risks of investing in Tumbleweed, we refer you to the documents Tumbleweed files from time to time with the Securities and Exchange Commission, particularly Tumbleweed's Form 10-K filed March 30, 2001 and Form 10-Q filed November 13, 2001. Tumbleweed assumes no obligation to update information contained in this press release.