Downloading SYMPA 6.1 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The software is included in Communication Tools. We recommend checking the downloaded files with any free antivirus. SYMPA.exe is the default file name to indicate the SYMPA installer. The most popular version among the program users is 6.1. This free software was originally developed by eRightSoft.
From the developer:
SYMPA is a Windows based application that allows users to send anonymous email messages. With this program you can send disguised emails without any additional proxy, or you can send totally anonymous emails (through Tunnel Proxy). The program has a built in web browser for easier and lighter use of PC resources when a quick surf is needed.
You may want to check out more software, such as Chaos Intellect, WabMail or Email Monitor, which might be similar to SYMPA.