EnterEdge Technology Joins Tumbleweed Channel Alliance Program

EnterEdge will now offer Tumbleweed's email policy management and security solutions to its customers

REDWOOD CITY, CA - July 10, 2001 - EnterEdge Technology, LLC, an enterprise-wide consulting firm providing infrastructure and security solutions, and Tumbleweed® Communications Corp. (NASDAQ:TMWD), a leading provider of mission-critical messaging software, announced today that EnterEdge has joined the Tumbleweed Channel Alliance Program. As a member of the Tumbleweed Channel Alliance Program, EnterEdge will offer its clients products from Tumbleweed's family of messaging management security solutions. Tumbleweed software is designed to allow organizations to apply security beyond the firewall and secure email and Web traffic.

"We are committed to providing our customers with a comprehensive approach to their security requirements," said David Hodges, President of EnterEdge Technology LLC. "As email and Internet communications have become a platform for business communications, the need for businesses to secure and manage those communications has become paramount. Tumbleweed's products offer our clients the ability to centrally define policies for Internet email and web communications and to centrally administer server-based S/MIME encryption. We believe Tumbleweed solutions enable us to provide our clients with a necessary component to their enterprise security architectures."

EnterEdge offers a comprehensive range of consulting services for enterprise information security systems. As a Tumbleweed Channel Alliance partner, EnterEdge will offer clients Tumbleweed's email management products and services that enable clients to protect valuable corporate information on the Internet. Using these products and services, firms can set and implement policies for Internet communication, including email and browser-based communications, by applying content control, encryption, access control, attachment management, virus scanning, distribution, monitoring and archiving and digital signature policies of email that are administered centrally and enforced universally across their enterprise. "EnterEdge is focused on bringing real value to their customers with a full range of e-commerce and information security services," said Robert Krauss, Vice President, Channel Alliance Program at Tumbleweed Communications Corp. "We are pleased to be part of their comprehensive program by providing them with the industry's leading solution for secure, manageable email communications."

The Tumbleweed Channel Alliance Program
The Tumbleweed Channel Alliance Program is a structured, multi-tiered channel program designed for IT consulting specialists pursuing revenue opportunities in the enterprise security and messaging software market. The program provides increasing levels of sales promotions, opportunities and technical support for Tumbleweed partners according to their commitment to Tumbleweed and value-add offered to the customer. The sales success of Tumbleweed partners will be monitored to identify opportunities for sponsorship into other program levels. More information on the Tumbleweed Channel Alliance Program can be found on the Tumbleweed Web site, located at www.tumbleweed.com where information is available to those interested in joining the program.

About EnterEdge
EnterEdge is an enterprise-wide consulting firm dedicated to the design, development, and support of leading edge e-commerce solutions. EnterEdge provides products and consulting services to secure and protect a company's electronic data. With diverse technology experience, EnterEdge crafts scalable and unique solutions for enterprise clients, while building the infrastructure needed to grow and manage their business. This enables the client to focus on their core business while planning and managing technological growth.

About Tumbleweed
Tumbleweed Communications (NASDAQ: TMWD) is a leading provider of mission critical messaging software that enables organizations to manage and secure online business communications and processes. Tumbleweed's customers use the company's solutions to define secure communication networks, to centrally control and monitor the corporate communications stream and to create a foundation for automated preparation and secure Internet delivery of sensitive business information. Companies that rely on Tumbleweed Communications solutions include American Express, JP Morgan Chase & Co, Chevron, Datek Online, the European Union's Joint Research Council, FDA, John Deere, Merrill Lynch, Nike, Northern Trust, NTT, Salomon Smith Barney, Travelers, United Parcel Service, and seven of the world's largest postal services. Tumbleweed Communications was founded in 1993 and is headquartered in Redwood City, CA. More information can be found at www.tumbleweed.com.

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.