PRESS RELEASE

BOULDER, Colo., April 23 /PRNewswire/ -- Webroot, a leading Internet security provider for the consumer, enterprise and SMB markets, today announced a strategic partnership with Zix Corporation , (ZixCorp(R)), (Nasdaq: ZIXI) a leading provider of email encryption services. Webroot will embed the ZixCorp email encryption service into its next release of Webroot(R) Email Security SaaS to help organizations better protect employee and company data to meet compliance and data security requirements.

"Recent laws and compliance regulations demand that businesses encrypt email communications that contain certain confidential and personal information. By adding email encryption technology to Webroot Email Security SaaS, our customers will benefit from more powerful and robust encryption services that improve data security and make compliance requirements easier to manage," said Don Beck, Webroot General Manager of SaaS. "ZixCorp's email encryption services are recognized for ensuring seamless and secure communications. We're excited to move to the next phase of this partnership."

When integrated with the existing rules engine and pre-defined compliance dictionaries of Webroot Email Security SaaS, the Webroot Email Encryption Service expands data loss prevention capabilities and improves the secure handling of confidential company data. Customizable encryption policies will allow automatic email encryption based on existing administration rules. Users can also encrypt communications on an as-needed basis. Messages are sent securely even if the recipient does not have encryption capabilities, eliminating the need for users to manage encryption keys.

"We're thrilled that Webroot has selected us as its email encryption partner," said Nigel Johnson, Vice-President of Business Development and Product Management, ZixCorp. "Webroot has proven experience as a security provider. We're looking forward to a long and successful partnership as each of our companies continues on a course of rapid growth."

Webroot plans to launch the new technology with the next global release of Webroot Email Security SaaS, slated for summer of 2009.

About Webroot

Webroot provides industry-leading Internet security solutions to consumers, enterprises and SMBs worldwide. Learn more at www.webroot.com or call 800.772.9383. Visit our Threat Blog at http://blog.webroot.com/.

About Zix Corporation

Zix Corporation is the leader in email encryption services. ZixCorp offers the simplicity of Software as a Service with the convenience of customizable encryption policies. ZixCorp provides automated key management 'in the cloud' for all its customers, resulting in a scalable, reliable, easy-to-use and simple-to-administer service.

ZixDirectory is the largest email encryption directory in the world enabling seamless and secure communication among communities of interest. ZixDirectory connects over 16 million members and includes over 800 financial institutions, the FFIEC federal banking regulators, over 1000 hospitals and over 30 Blue Cross Blue Shield organizations and 20 state banking regulators. For more information visit www.zixcorp.com.