Download of ZixMail 3.1.12 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This PC program can be installed on Windows XP/7/8/10/11 environment, 32-bit version.
The program's installer files are commonly found as ZixMail.exe or ZixSignature.exe etc. The most popular versions of the software 3.1 and 2.8. ZixMail lies within Communication Tools, more precisely E-mail Tools. We recommend checking the downloaded files with any free antivirus. This tool was originally created by Zix Corporation.
From the developer:
ZixMail is the desktop email encryption solution that provides individuals with a high level of email security. It’s an easy-to-use solution that lets users encrypt and decrypt emails and attachments with a single click, ensuring that you can send emails to any user in a secure manner.
You may want to check out more software, such as SmartPOP2Exchange, SDP or Cloudmark Desktop for Microsoft Outlook, which might be related to ZixMail.