Tumbleweed Named Finalist For eWEEK Channel Insider Product of the Year Awards in Two Categories

Tumbleweed® Communications Corp. (NASDAQ:TMWD), an industry leader in managed file transfer and email security, today announced its SecureTransport™ and MailGate® products as finalists in the 2008 eWEEK Channel Insider Product of the Year Awards. The Awards recognize vendors’ products for their strong service to the channel community. Tumbleweed's SecureTransport and MailGate products were chosen to the finalist shortlist of the best channel products by eWEEK Channel Insider editors. The winners of this award, chosen this spring, will ultimately be selected by the channel community voting on best-in-class products that provide Value Added Resellers (VARs) with strong margins and substantial service opportunities. "Tumbleweed takes pride in offering high-value, differentiated security solutions to our partners, and honors such as these acknowledge the success of our efforts,” said Dave Harris, vice president of worldwide channels for Tumbleweed. "Earning this finalist recognition within months of re-launching our Tumbleweed Alliance Program is a testament to our traction among partners. Our focus and investment in recruiting and enabling valued partners continues to grow, as does our commitment to providing distinguished products with strong margins.” Tumbleweed's SecureTransport is one of five products nominated in the Server Security Software category. SecureTransport, an industry leading enterprise managed file transfer solution, enables the exchange of valuable and sensitive data over the Internet in a secure and reliable manner. MailGate, an award-winning email security solution that provides both inbound and outbound security, is also one of five products nominated in the Security Appliances category. The winners for the eWEEK Channel Insider Product of the Year Awards will be announced in spring 2008. To vote for Tumbleweed’s SecureTransport and MailGate product, please visit the following site: http://www.channelinsider.com/c/a/Surveys/2008-Product-Vote/ The Tumbleweed Alliance Program (TAP) enables qualified value added resellers, distributors, solution providers, service providers and system integrators to sell Tumbleweed’s secure managed file transfer and email security products at favorable margins with strong marketing and sales support. Partners in the TAP successfully and profitably leverage Tumbleweed's products to provide comprehensive secure content delivery solutions to medium-size, enterprise and government customers around the world. SAFE HARBOR STATEMENT Tumbleweed cautions that forward-looking statements contained in this press release are based on plans and expectations as of the date of the press release, and that a number of factors could cause the actual results to differ materially from the guidance given at this time. These factors are described in the Safe Harbor statement below. 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 success, margins or profits created by the Tumbleweed Alliance Program or any partner participating in the program. 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 17, 2008. Tumbleweed assumes no obligation to update information contained in this press release. Although this release may remain available on Tumbleweed’s website or elsewhere, its continued availability does not indicate that Tumbleweed is reaffirming or confirming any of the information contained herein. About Tumbleweed Tumbleweed Communications Corp. (NASDAQ:TMWD), an industry leader in managed file transfer and email security, provides enterprise-class solutions to organizations of all sizes. Tumbleweed’s innovative products enable organizations to effectively manage and protect business-critical Internet communications, with capabilities that span secure file transfer, encryption, data loss prevention, and email security. Tumbleweed has more than 3,200 customers worldwide, including blue-chip companies across an array of industries such as Technology, Retail, Finance, Healthcare, Manufacturing, Consumer Packaged Goods, Telecom, Energy, and the U.S. Government. The world’s most security conscious organizations rely upon Tumbleweed technology including Bank of America Securities, JP Morgan Chase & Co., the U.S. Food and Drug Administration, and the U.S. Department of Defense. Our award-winning products build on 15 years of R&D and 27 security patents in the U.S. alone – many of which are licensed by other security vendors. More information can be found at www.tumbleweed.com. Tumbleweed, SecureTransport and MailGate are either registered trademarks or trademarks of Tumbleweed Communications Corp. in the United States and/or other countries. All other trademarks are the property of their respective owners.