“Bitmessage is an open-source communications protocol for keeping your email private. Unlike PGP and similar programs that hide just the content of messages, Bitmessage also hides metadata like the sender and receiver of messages. And unlike PGP, Bitmessage doesn’t require that users manage public or private keys to use the system; Bitmessage uses strong authentication so that the sender of a message cannot be spoofed. Bitmessage is also decentralized and trustless, which means that you don’t need to trust root certificate authorities or any third parties who, under legal duress from a government, might give up your data.”
http://readwrite.com/2013/07/15/bitmessage-choice-of-a-rightly-paranoid-generation
