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Zix Corporation Processing Transactions at Rate of More than 2 Billion Annually; Company Hits New High of 6.1 Million Encrypted Emails per Month

DALLAS--(BUSINESS WIRE)--Aug. 17, 2006--Zix Corporation (ZixCorp(R)), (Nasdaq: ZIXI), the leader in hosted services for email encryption and e-prescribing, today announced that the company now encrypts 6.1 million email messages every month for its network of more than 5.5 million recipients. To date, ZixCorp has encrypted over 160 million emails, a 60 percent increase from a year ago.

The ZixData Center(TM) is on track to process over two billion transactions in 2006. These transactions include key retrieval, key verification and user authentication, as well as message scanning and delivery for customers of the completely outsourced Email Encryption Service. The ZixData Center has 99.99 percent reliability and rigorous policy controls, as evidenced by its SysTrust certification and SAS-70 Type II accreditation.

In other corporate news, the company announced the launch of the new ZixCorp Compliance Resource Center. This powerful online resource provides educational and regulatory compliance information for the financial and healthcare industries. The ZixCorp Compliance Resource Center is live at To obtain a username and password for the site, please register directly on the site.

"As the leading provider of email encryption services, we continue to stay at the forefront of the industry with efforts such as launching our new online compliance resource center. ZixCorp customers and non-customers can rely on the resource center to stay up-to-date on regulatory news and information," said Rick Spurr, chief executive officer for ZixCorp. "Additionally, the company is on target to reach an industry milestone by processing over two billion transactions annually via our Email Encryption Service. This achievement further validates the continued growth and leadership that we emphasized on our conference call last week, in which we highlighted a strong second quarter for email encryption with near record total orders for our service."

ZixCorp's hosted Email Encryption Service provides automatic seamless encrypted email among all ZixCorp customers. For example, our health insurance customers cover 60 million lives and many healthcare providers join our service to get easy encrypted email access to these large insurers. Currently, one in eight hospitals uses ZixCorp services. We also have four of the five federal regulatory agencies that monitor financial institutions as customers, and hundreds of banks and credit unions have joined our service so they can easily communicate with their regulators.

About Zix Corporation

ZixCorp is the leading provider of hosted email encryption and e-prescribing services. 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 reduces costs and improves patient care by automating the prescription process between payors, doctors, and pharmacies. For more information, visit

CONTACT: Zix Corporation
Investor Relations:
Peter Wilensky, 214-515-7357
Public Relations:
Farrah Corley, 214-370-2175

SOURCE: Zix Corporation