AbsoluteFuture markets its SafeMessage programs as subscriptions. The software requires Windows 95 or later. Both sender and receiver must have copies of SafeMessage on their systems and must subscribe to the service. If you're behind a corporate firewall, SafeMessage will shuttle your messages past the potentially snooping eyes of the company mail server, whether your message's recipient is on the Internet or the company network. SafeMessage can also be used as a secure corporate instant-messaging program.
Messages are triple-encoded.
SafeMessage enciphers not only the message but its header as well to make the communication untraceable. It uses the impregnable Diffie-Hellman encryption algorithm. Each user has a public key of hexadecimal numbers. This key is given to correspondents who use it to generate unique secret codes that only the key's owner can read. Private keys are used to unlock codes, or read messages.