REMINDER: Tumbleweed to Announce Fourth Quarter Financial Results on February 1, 2006

REDWOOD CITY, CA – January 30, 2006 – Tumbleweed® Communications Corp. (NASDAQ: TMWD), a leading provider of email security, file transfer security, and identity validation software and appliances, will report financial results for the fourth quarter ended December 31, 2005 after the close of the market on Wednesday, February 1, 2006.

For those unable to participate in the live conference call, a replay of the conference call will be available (starting two hours after the call) for the following five business days by dialing 800-405-2236 and entering the following pass code: 11050476#.

Also, an instant replay of the conference call will be available over the Internet at http://www.tumbleweed.com in the Investor Relations area of the site or by going to http://www.mkr-group.com.

Safe Harbor Statement

Tumbleweed cautions that forward-looking statements contained in this press release are based on current plans and expectations, 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. In some cases, forward-looking statements can be identified by terminology such as "will" 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 16, 2005 and Form 10-Q filed November 2, 2005.

Tumbleweed assumes no obligation to update information contained in this press release, including for example its guidance regarding its future performance, which represents Tumbleweed's expectations only as of the date of this release and should not be viewed as a statement about Tumbleweed's expectations after such date. 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 Communications Corp.

Tumbleweed provides security software and appliances for email protection, file transfers, and identity validation that allow organizations to safely conduct business over the Internet. Tumbleweed offers these solutions in three comprehensive product suites: MailGate®, SecureTransport(TM), and Validation Authority(TM). MailGate provides protection against spam, viruses, and attacks, and enables policy-based message filtering, encryption, and routing. SecureTransport enables business to safely exchange large files and transactions without proprietary software. Validation Authority is the world-leading solution for determining the validity of digital certificates. Tumbleweed's enterprise and government customers include ABN Amro, Banc of America Securities, Catholic Healthcare West, JP Morgan Chase & Co., The Regence Group (Blue Cross/Blue Shield), St. Luke's Episcopal Healthcare System, the U.S. Food and Drug Administration, the U.S. Department of Defense, and all four branches of the U.S. Armed Forces. Tumbleweed was founded in 1993 and is headquartered in Redwood City, Calif. For additional information about Tumbleweed go to www.tumbleweed.com or call 650-216-2000.

Tumbleweed, MailGate, SecureTransport and Validation Authority 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.

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