Tumbleweed Reports Financial Results for Fourth Quarter and Full Year 2006

Redwood City, Calif., February 1, 2007 – Tumbleweed Communications Corp. (Nasdaq: TMWD), a leading provider of messaging security products, today reported financial results for its fourth quarter and full year ended December 31, 2006.

Tumbleweed reported record revenue of $62.0 million for the year ended December 31, 2006, an increase of 24% year-over-year, and non-GAAP net income of $2.2 million, or $0.04 per share, for the full year. GAAP net loss was $4.9 million, which included stock-based compensation expense of $4.6 million and $2.5 million for the amortization of intangible assets. These results include an expense of $933,000, or $(0.02) per share, recognized in the fourth quarter of 2006, for transition of the Company’s hardware products to an improved appliance platform.

Cash and cash equivalents were $30.5 million at December 31, 2006 compared to $27.0 million a year ago.

"The results we delivered in 2006 demonstrate that the actions that we have taken to strengthen the company’s business have been successful," said James P. Scullion, Chief Executive Officer of Tumbleweed. "We delivered our fourth consecutive year of revenue growth, record license revenue, our first full year of non-GAAP profitability and our ninth consecutive quarter of positive cash flow from operations."

"Leading global enterprises continue to select Tumbleweed’s solutions because of our expertise in messaging security and the ease of use of our products − we are critical to their businesses. In 2006, we increased our customer base to more than 2,400 active accounts and count seven of the top 10 global financial institutions, nearly 50% of the Fortune 100 companies, and many leading healthcare providers and government agencies among our customers. I am very pleased with the momentum we built as we closed the year and believe we are in a strong position to leverage our success and leadership into 2007 and beyond," concluded Scullion.

Financial Results

Total revenue for the fourth quarter of 2006 was $16.7 million, an 11% increase from $15.1 million in the third quarter of 2006 and a 41% increase from $11.8 million in the fourth quarter of 2005. Product revenue for the fourth quarter of 2006 was $8.7 million, up 20% from $7.3 million in the third quarter of 2006 and up 94% from the fourth quarter of 2005. Service revenue for the fourth quarter of 2006 was $7.6 million, up from $7.5 million in the third quarter of 2006 and $7.0 million in the fourth quarter of 2005.

Tumbleweed reported a non-GAAP net loss for the fourth quarter of 2006 of $242,000, or $(0.00) per share, compared to non-GAAP net income of $172,000, or $0.00 per share, in the third quarter of 2006 and a non-GAAP net loss of $549,000, or $(0.01) per share, for the fourth quarter of 2005. Non-GAAP results exclude stock-based compensation expense of $840,000 in the fourth quarter of 2006, $1.1 million in the third quarter of 2006, and $62,000 in the fourth quarter of 2005, and the amortization of intangible assets in the amounts of $438,000 in each of third and fourth quarters of 2006 and $831,000 in the fourth quarter of 2005

GAAP net loss for the fourth quarter of 2006 was $1.5 million, as compared to $1.4 million in both the third quarter of 2006 and the fourth quarter of 2005.

The fourth quarter and full year 2006 results included an expense of $933,000, or $(0.02) per share, for the estimated loss on inventory as a result of the Company’s decision to transition its hardware products from a proprietary design to a standard product offering. This transition is expected to provide increased product performance and customer satisfaction while allowing the Company to focus on its core security software expertise.

Revenue for the year ended December 31, 2006 was $62.0 million, a 24% increase from $50.0 million for the previous year. Product revenue was $28.7 million in 2006, up 37% from $20.9 million in 2005. Net income on a non-GAAP basis was $2.2 million or $0.04 per share for the full year 2006, compared with a non-GAAP net loss of $171,000, or $(0.00) per share, for the full year 2005.

On a GAAP basis, the net loss for the full year 2006, was $4.9 million, or $(0.10) per share, compared to a net loss of $3.9 million, or $(0.08) per share, for the full year 2005.

Recent Announcements

• TTumbleweed received a SC Magazine Best of 2006 Award in the Anti-Spam category. Tumbleweed’s MailGate® 5550 product line was selected as a “Recommended” product by SC Magazine editors who recognized the best products reviewed over the course of 2006. SC Magazine described the MailGate Appliance™ 5550 as “simple to use but with plenty of power” while providing “a range of powerful anti-spam services behind a deceptively simple interface.”
• Tumbleweed introduced its Adaptive Image Filtering (AIF) technology, specifically designed to combat the ever-increasing amount of image spam. Tumbleweed's Message Protection Lab found as much as 36 percent of all spam was image-based, yet it is not consistently blocked as a result of outdated signature and reputation-based technologies. Tumbleweed's AIF technology analyzes email images using wavelet transform, an image-processing technique that reduces the image to a mathematical formula that represents the structure of the image but allows “fuzzy matching.” This image processing takes into account the image-randomizing practices that spammers rely on to circumvent email filters.

Financial Outlook

First Quarter of 2007:

• The Company currently expects total revenue for the first quarter of 2007 to be between $14.0 million and $15.5 million.
• Non-GAAP results are currently expected to range from a loss of $700,000 to income of $200,000, or ($0.01) to $0.00 per share.
• GAAP results are currently expected to range from a net loss of $2.0 million to $1.1 million, or $(0.04) to $(0.02) per share, after including an estimated $900,000 for stock-based compensation and $400,000 for the amortization of intangible assets.
• Per share amounts are based on an estimated 50.6 million shares outstanding.

Full Year 2007:

• The Company’s currently expects revenue for the full year 2007 to be between $70 million and $75 million.
• Non-GAAP income for 2007 is currently expected to be in a range of $5.2 million and $7.5 million, or $0.10 to $0.15 per share.
• Including an estimated $3.5 million for stock-based compensation expense and the amortization of intangible assets of $1.2 million, GAAP income is currently estimated to be $500,000 to $2.8 million, or $0.01 to $0.05 per share.
• Per share amounts are based on an estimated 51.0 million shares outstanding.

Conference Call Information

Tumbleweed management will host a conference call on Thursday, February 1, 2007 at 2:00 p.m. PST (5:00 p.m. EST) to discuss the fourth quarter and full year 2006 results. The call can be accessed by dialing (800) 218-0713 and giving the company name, "Tumbleweed." Participants are asked to call the assigned number approximately 10 minutes before the conference call begins. A replay of the conference call will be available after 5:00 p.m. PST on February 1, 2006 through February 8, 2007 by dialing (800) 405-2236 and entering pass code 11080171#. The conference call and supplemental financial information will also be available on the investor relations portion of the Tumbleweed website.

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, particularly with respect to its expectations about Tumbleweed's financial outlook for the first quarter of 2007 and for the 2007 year as a whole (including estimated revenue and revenue growth, income and earnings per share on both a GAAP and a non-GAAP basis), as well as its beliefs about Tumbleweed's ability to leverage its success and leadership, in addition to its expectation that the transition of its hardware products to a standard product offering will provide increased product performance and customer satisfaction while allowing Tumbleweed to focus on its core expertise. 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 16, 2006 and Form 10-Q filed November 9, 2006, and such filings for the periods referred to above, to be filed subsequently.

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 as of a later date.

Non-GAAP Information

The non-GAAP financial information included in this press release is not prepared in accordance with generally accepted accounting principals (“GAAP”) as it excludes amortization of intangible assets, stock-based compensation expense, and merger-related and other costs. Management believes that the presentation of non-GAAP information may provide useful information to investors because Tumbleweed has historically provided this information and understands that some investors consider it useful in evaluating Tumbleweed's expenses. Management also uses this non-GAAP information, along with GAAP information, in evaluating Tumbleweed's expenses and to compare Tumbleweed’s performance with that of its competitors. The non-GAAP results should not be considered a substitute for financial information presented in accordance with generally accepted accounting principles, and may be different from non-GAAP measures used by other companies.

About Tumbleweed

Tumbleweed Communications (NASDAQ:TMWD), the industry’s leading pure play messaging security vendor, provides world-class innovative messaging security solutions for organizations of all sizes. Organizations rely on Tumbleweed's solutions to securely manage their Internet communications, spanning email management to file transfers. Tumbleweed has more than 2,400 customers worldwide, representing industries such as Finance, Healthcare, 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 thirteen years of R&D and 25 security patents in the U.S. alone – many of which are licensed by other security vendors. More information can be found at tumbleweed.com. For Investor Relations Inquiries: For Media Relations Inquiries: Scott Wilson Dan Gould The Blueshirt Group SHIFT Communications (415) 489-2188 (415) 591 - 8428 scott@blueshirtgroup.com dgould@shiftcomm.com or Tim Conley, SVP Finance and CFO Tumbleweed Communications Corp. (650) 216-2000 tim.conley@tumbleweed.com

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