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                                                                    EXHIBIT 99.1



CRITICAL PATH EXPANDS eBUSINESS INFRASTRUCTURE THROUGH COMPLETION OF
PEERLOGIC ACQUISITION


        Critical Path Strengthens Messaging Infrastructure Solutions That Fuel
        eBusiness


        SAN FRANCISCO (SEPTEMBER 26, 2000) - Critical Path Inc. (Nasdaq: CPTH),
the leading provider of Internet messaging infrastructure, today announced the
successful completion of the acquisition of PeerLogic, a premier supplier of
directory and data integration software. The completion of this acquisition
further positions Critical Path as the only company capable of providing the
end-to-end messaging infrastructure solutions that transform diverse IT
environments into cohesive eBusiness solutions.

        Critical Path is able to provide the ideal infrastructure for secure
eBusiness communications by enabling mission-critical business information to
flow securely between any two points in the electronic economy. The acquisition
will bring to fruition the combination of Critical Path's InJoin(TM) Directory
and Meta-Directory technologies with PeerLogic's renowned LiveContent DIRECTORY.
A strong directory/meta-directory system empowers any corporation, regardless of
IT platform, to leverage existing technologies and join disparate
mission-critical data residing throughout an organization into a singular
efficient tool. Directories and meta-directories are facilitators of rapid
change in the new economy, helping businesses control their digital assets while
mitigating security risks associated with opening their business systems to the
world.

        "Critical Path is building the most compelling portfolio of products and
services to serve as the foundation for modern eBusiness, and the combination of
PeerLogic's suite of data integration solutions and Critical Path's advanced
messaging solutions creates the Internet messaging infrastructure upon which the
new economy is being built," said Doug Hickey, CEO of Critical Path.
"Corporations can now leverage Critical Path's complete end-to-end messaging
infrastructure to develop an eBusiness strategy that leverages their existing
technology investments."

        In addition to building an eBusiness messaging infrastructure, Critical
Path is positioned to play an important role in the development and widespread
adoption of communications security. In global eBusiness, digital signature
technology and Public Key Infrastructure (PKI) will continue to grow in
importance. This acquisition creates a powerful secure messaging suite that
interoperates with the major PKI technology providers including Verisign,
Entrust, Baltimore, DigiCert, and Xcert, ensuring easy and rapid implementation
of a PKI Certificate infrastructure for eBusiness.

        The combination of PeerLogic's customer base, which consists of more
than 2,000 businesses including EDS, PricewaterhouseCoopers and Britain's Royal
Mail, and Critical Path's established customer base which includes corporations,
Internet-centric, wireless and telecommunications companies, solidly positions
Critical Path as the company providing the foundation for eBusiness.


ABOUT CRITICAL PATH, INC.

        Critical Path Inc. (Nasdaq: CPTH) ignites the power of information for
eBusiness by providing the Internet messaging infrastructure upon which the new
economy is built. The company is a single resource that powers the flow of
mission-critical information through an integrated portfolio of secure
messaging, directory, data integration and collaboration solutions. Critical
Path's technology strengthens all aspects of the eBusiness value chain by
providing the messaging infrastructure that fuels customer's new and existing
eBusiness initiatives. Critical Path is headquartered in San Francisco, with
offices worldwide. More information on Critical Path can be found at www.cp.net.

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        Critical Path and the Critical Path logo are the trademarks of Critical
Path, Inc. All other trademarks are the property of their holders.

        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).