Tumbleweed to Present at Channel Focus North America 2008

David Harris to outline channel opportunities and strategies for taking advantage of technology convergence

Redwood City, Calif. – April 22, 2008 – Tumbleweed® Communications Corp. (NASDAQ:TMWD), an industry leader in managed file transfer and email security, today announced that David Harris, Tumbleweed’s “channel chief” and vice president of global channels, will be presenting at Channel Focus North America conference in a session entitled, “What Impact Will Technology Convergence Have on the IT Channel?”

On Wednesday, April 23, at 2:45 p.m., Harris will present on considerations the IT channel should bear in mind as technology convergence takes hold. As technologies evolve, the channel needs to take advantage of the opportunities presented from this convergence, and this session will outline strategies for adjusting to these new opportunities. Harris will discuss current areas of convergence and how the channel programs can adapt to the changing technology landscape for continued success.

Channel Focus North America, now in its eleventh year, is the conference that defines strategies and tactics leading vendors are using to grow their business. Taking place April 24 – 25 in La Jolla, Calif., the conference has built a reputation for sourcing the finest speakers, talking about how they are combining radical new thinking and proven strategies to successfully open up new channels, and redefine existing, channel sales and marketing methods. More details about Channel Focus North America can be found here: https://www.baptie.com/events/info.asp?e=89&page=about

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 Tumbleweed’s participation in Channel Focus North America conference, as well as the content of Tumbleweed’s presentations at the conference. 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 28 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 is a registered trademark of Tumbleweed Communications Corp. in the United States and/or other countries. All other trademarks are the property of their respective owners.

###