PeopleSoft Selects Tumbleweed MMS

Tumbleweed MMS provides streamlined email management solution

REDWOOD CITY, CA - September 18, 2000 - Tumbleweed® Communications Corp. (Nasdaq:TMWD), a leading provider of advanced email solutions for business communications, today announced that PeopleSoft, Inc., a global leader in e-business applications, has chosen Tumbleweed Messaging Management System (MMS)T to monitor, filter and manage business communications on the Internet.

Tumbleweed MMS is a set of email management products and services that enables PeopleSoft to protect valuable corporate information on the Internet. PeopleSoft can use MMS to set policies to apply content control, encryption, access control, attachment management, virus scanning and digital signature policies that are administered centrally and universally across an enterprise.

"In choosing Tumbleweed Messaging Management System (MMS), PeopleSoft is taking steps to ensure its Internet email messaging is secure and protected against viruses," said PeopleSoft CIO David Thompson.

"PeopleSoft understands that its intellectual capital flows over the Internet via email. With Tumbleweed MMS, PeopleSoft can safeguard this communication flow by creating policies that are centrally managed," said Jeffrey C. Smith, President and CEO, Tumbleweed Communications Corp. "MMS allows PeopleSoft employees to safely open their communication stream to the Internet without altering their email clients or changing their behavior."

About PeopleSoft
PeopleSoft Inc. is a leading provider of eBusiness applications that enable people customers, employees, and suppliersto power the Internet. PeopleSoft's pure Internet Customer Relationship Management, Supply Chain Management, and Enterprise.

Management solutions provide the industry's most open and flexible e-commerce platform. PeopleSoft employs more than 7,000 people worldwide, including 2,400 eBusiness consultants. More than 4,500 organizations in 107 countries run on PeopleSoft eBusiness applications.

PeopleSoft and the PeopleSoft logo are registered trademarks. All other company and product names may be trademarks of their respective owners.

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.