There was a download of OeyEnc 1.0.601 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. The software lies within Communication Tools, more precisely E-mail Tools. This free program is a product of mutexed. The most popular version of the OeyEnc 1.0. Commonly, this program's installer has the following filename: OeyEnc.exe.
From the developer:
OeyEnc is a fully functional yEnc decoder plugin for the Outlook Express and Windows Mail clients. Once loaded, OeyEnc works transparently inside these mail clients without any configuration changes, decoding yEnc messages as you view and/or save them.
You may want to check out more software, such as Personal Mail Server Pro, iOpus Secure Email Attachments SEA or MsgSave, which might be related to OeyEnc.