Critical Path Signs Agreement with GTS to Offer Advanced Messaging Solutions Across Europe.

SAN FRANCISCO--(BUSINESS WIRE)--Nov. 8, 1999--

Critical Path, Inc. (Nasdaq:CPTH), a leading provider of business-to-business Internet messaging solutions for corporations, Internet service providers (ISPs), Web hosting companies, and Web portals, today announced a strategic relationship with Global TeleSystems Group, Inc. (GTS) (NYSE:GTS)(Frankfurt:GTS)(Easdaq:GTSG), one of the leading providers of borderless broadband communications services across Europe and beyond.

GTS will offer Critical Path's robust, scalable and reliable messaging services under the GTS brand name as part of its new initiative to offer an expanded range of high-value IP services and products.

"GTS has the most extensive network and service operation across Europe. Through its relationship with Critical Path, GTS is able to add reliable and scaleable IP services to its portfolio," said Bill Rinehart, Critical Path's VP of worldwide sales. "They were searching for and found in Critical Path a comprehensive messaging solution that they were confident could supply the secure, carrier-class email and outsourced messaging solutions customers expect."

"The current IP services growth in Europe is explosive and will significantly increase as mission-critical business applications transition to IP networks," said Leslie Harris, president of GTS Product Services. "GTS is moving quickly to leverage its leading position as the European Internet backbone to become a premier provider of Internet and IP services to corporate end-users. Introducing network-hosted messaging applications in partnership with Critical Path, a recognized global leader in this market, fits perfectly with our strategy to roll out best-in-class IP services for our customers."

GTS will seope today, serving businesses and carriers in 20 European countries with a range of broadband, Internet/IP and voice services. GTS operates the first and most extensive trans-European broadband fiber network today, with network points of ending its core network deeper into key European cities through the development of a number of city enterprise networks (CENs). GTS has rapidly grown through the acquisitions of Hermes Europe Railtel, Ebone, Esprit Telecom, Omnicom, NetSetropolitan Washington, D.C. area and with European headquarters in London, GTS has offices in over 70 European cities, including Brussels, Amsterdam, Paris, Frankfurt, Milan, Madrid, Budapest and Prague. For further information, visit GTS's website at www.gtsgroup.net.

About Critical Path, Inc.

Critical Path, Inc. (Nasdaq:CPTH) is a leading provider of business-to-business Internet messaging solutions for corporations, Internet service providers (ISPs), Web hosting companies, and Web portals. Critical Path has built an industry-leading global infrastructure with data centers connected to key Internet exchange points, and currently reaches millions of end-users through its customer relationships. Critical Path provides reliable, secure, and scalable e-mail, and a flexible suite of enhanced messaging services to partners such as E

RADE, CompuServe, Network Solutions, U S West,
Sprint, and ICQ. Critical Path is headquartered in San Francisco,
California, with offices in locations nationwide and in Germany and
the UK. More information on Critical Path can be found at www.cp.net.

     Note to Editors: Critical Path is a service mark and the
Critical Path logo is a trademark of Critical Path, Inc.

     The statements in this press release relating to matters that are
not historical are forward-looking statements. Actual results could
differ materially from these forward-looking statements. Risks and
uncertainties facing Critical Path are described in its prospectus
dated June 1, 1999 and with its periodic filings with the Securities
and Exchange Commission (www.sec.gov).