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Zix Corporation Surpasses 12 Million ZixDirectory(TM) Members

World's Largest Email Encryption Community Accelerates Growth; Company Adds 21st State Banking Regulator

DALLAS, Sept. 3 /PRNewswire-FirstCall/ -- Zix Corporation (ZixCorp(R)), (Nasdaq: ZIXI), the leader in hosted services for email encryption and e-prescribing, today announced that its ZixDirectory surpassed 12 million email encryption members, with an accelerated growth rate of 80,000 members per week, compared to a growth rate of 70,000 members per week in the previous quarter. ZixDirectory is the largest email encryption directory in the world, interconnecting a network of communities that use ZixCorp's Email Encryption Service to securely send and receive email.

ZixCorp also announced that it has added Indiana Department of Financial Institutions, its 21st state banking regulator, to its growing list of government clients. This addition further strengthens ZixCorp's position in the financial regulatory environment and now ZixCorp is used by more than 40 percent of the state bank regulators. The 21 state banking regulatory agencies are members of ZixDirectory, which connects all ZixCorp customers for seamless, transparent and secure email. There are more than 1,000 hospitals in the directory, more than 30 Blue Cross Blue Shield organizations, 700 financial institutions, federal and state banking regulators as well as a growing number of federal, state and county departments.

"ZixDirectory unifies its vast network by allowing seamless encrypted email delivery between communities of interest in healthcare, finance and government. Both existing and prospective users of ZixCorp's Email Encryption Service benefit from the 'network effect,' where the value of the ZixDirectory grows exponentially as we add new members," said Nigel Johnson, vice president of business development and product management for ZixCorp. "ZixCorp provides automated key management for all of its customers, which makes email encryption easy to use. We can have our customers up and running in as little as four hours and they are instantly plugged into ZixDirectory, which connects our customers together without the hassle of pre-registration, while still allowing secure email delivery to anyone, anywhere."

About Zix Corporation

ZixCorp is the leading provider of easy-to-use-and-deploy email encryption and e-prescribing services that Connect entities with their customers and partners to Protect and Deliver sensitive information in the healthcare, finance, insurance and government industries. ZixCorp's hosted Email Encryption Service provides an easy and cost-effective way to ensure customer privacy and regulatory compliance for corporate email. Its PocketScript(R) e-prescribing service saves lives and saves money by automating the prescription process between payors, doctors and pharmacies. For more information, visit

SOURCE Zix Corporation

CONTACT: Farrah Corley, Public Relations, +1-214-370-2175,, or Peter Wilensky, Investor Relations, +1-214-515-7357,, both of Zix Corporation