There was a download of zMailGuard 1.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular version of the program 1.0. ZMailGuard lies within Security Tools, more precisely Antivirus.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The common filename for the program's installer is ZSZMGD.exe. The actual developer of the program is ZapperSoftware.com.
From the developer:
zMailGuard is an application to protect privacy when sending e-mails on the Internet. This program increases your e-mail security by providing a secure form of electronic mail. You can distribute the software easily from the menu to anybody that you wish to exchange encrypted messages and/or files with. You can generate as many keys as you want for added protection.
You may want to check out more software, such as Kaspersky Security for Microsoft Exchange Server 2003, SC Spy Message or Encrypt My Information, which might be similar to zMailGuard.