New Consumer Mobile Email Service Launched by SFR Quickly Reaches 150,000 Subscribers Using Critical Path's Memova Messaging Technology.

SAN FRANCISCO -- Critical Path, Inc. (Nasdaq:CPTH), a leading provider of messaging software and services, today announced that SFR, Vodafone's French Network Operator, has reached 150,000 MMS Mail subscribers in just four months since the launch of the new consumer mobile email service this summer. SFR's MMS Mail service, powered by Critical Path's Memova(TM) Messaging technology, has quickly attracted subscribers by providing a simple, cost-effective way to send and receive mobile email.

Despite market research indicating that consumers want mobile email, the cost and complexity of existing solutions were limiting mass-market adoption. Utilizing Memova Messaging technology, SFR is providing MMS Mail -- a consumer-oriented mobile email service that is affordable, simple to set up and works on most any mass-market mobile phone.

"MMS Mail makes it easy for SFR subscribers to access email on the go and send and receive multimedia-rich messages on our standard consumer mobile phones," said Jean-Francois Caillard, Messaging Product Line Director, SFR. "Critical Path's messaging technology has helped us provide the kind of mobile email service the mass market wants at a price consumers can afford and thus adoption rates have far exceeded our expectations."

Critical Path's Memova Messaging technology powers the core messaging service for SFR MMS Mail. For just EUR 2.50 per month, MMS Mail subscribers can specify, based on sender, which email messages they would like to receive on their mobile phone and have messages from multiple ISP or Web mail accounts pushed to their phone's inbox. The service works with any MMS-enabled phone and alleviates the need for an expensive phone upgrade or installation of complicated software on the handset.

"We've learned from our experience with operators worldwide that ease-of-use and affordability are key to mass-market adoption," said Mike Serbinis, CTO, Critical Path. "The rapid growth of SFR's MMS Mail is proving this to be true yet again. MMS Mail is a good example of how a mobile email service that is easy to set up and use, has the right price point, and gives subscribers the messages that matter can rapidly attract subscribers. We are extremely pleased to be part of SFR's early success with this service."

In addition to powering SFR's MMS Mail service with Memova(TM) Messaging, Critical Path's Memova(TM) Mobile has been deployed by leading Indonesian operator Indosat, and Critical Path is working with mobile operators worldwide to deliver consumer mobile email and messaging services for the mass market.

About SFR: www.sfr.fr

SFR is the second-ranking mobile phone operator in France with 35.8% of market share and 16.2 million customers on 30th June 2005. It recorded turnover of 7.2 billion euros in 2004.

Its GSM/GPRS network now covers over 98% of the French population and 87% of French territory. As the first mobile operator to launch 3G in France in November 2004, SFR covers now 50% of the French population in 3G and will cover 60% at end 2005.

About Critical Path, Inc.

Critical Path's Memova(TM) solutions provide a new and improved email experience for millions of consumers worldwide, helping mobile operators, broadband and fixed-line service providers unlock the potential of email in the mass market. Memova(TM) Mobile gives consumers instant, on-the-go access to the messages that matter most. Featuring industry-leading anti-spam and anti-virus technology, Memova(TM) Anti-Abuse protects consumers against viruses and spam. Memova(TM) Messaging provides consumers with a rich email experience, enabling service providers to develop customized offerings for high-speed subscribers. Headquartered in San Francisco with offices around the globe, Critical Path's messaging solutions are deployed by more than 200 service providers throughout the world. More information is available at www.criticalpath.net.

Forward-Looking Statements: This press release contains forward-looking statements by the Company and its executives regarding the performance of our product and service offerings, the future release of our products and services and our customer's products and services which include our offerings, the ability of our customers to achieve cost savings and improve revenues in the provision of services, industry trends, market and customer requirements, the ability of our products and services to meet the business needs of our customers, the market for products and services like ours and the performance of our senior management in achieving strategic goals. The words and expressions "look forward to," "will," "expect," "plan," "believe," "seek," "strive for," "anticipate," "hope," "estimate" and similar expressions are intended to identify the Company's forward-looking statements. These forward-looking statements involve a number of risks and uncertainties that could cause actual results to differ materially from those anticipated. These risks include, but are not limited to, our evolving business strategy and the emerging and changing nature of the market for our products and services, our ability to deliver on our sales objectives, the ability of our technology and our competitors' technologies to address customer demands, changes in economic and market conditions, and software and service design defects. These and other risks and uncertainties are described in more detail in the Company's filings with the U.S. Securities and Exchange Commission (www.sec.gov) made from time to time including Critical Path's Annual Report on Form 10-K/A for the fiscal year ended December 31, 2004, its Quarterly Reports on Forms 10-Q for the fiscal quarters ended March 31 and June 30,2005, Current Reports on Form 8-K, as may be amended from time to time, and all subsequent filings with the United States Securities and Exchange Commission (www.sec.gov). The Company makes no commitment to revise or update any forward-looking statements in order to reflect events or circumstances after the date any such statement is made.

Note to Editors: Critical Path, the Critical Path logo, Memova and the Memova logo are the trademarks of Critical Path, Inc. All other trademarks are the property of their respective holders.