I was just recently wondering if you could use the bitcoin-style blockchain concept to implement encrypted "email". It looks like this does exactly that... The

I was just recently wondering if you could use the bitcoin-style blockchain concept to implement encrypted "email". It looks like this does exactly that... Their white paper seems to address some issues such as proof-of-work, spam, and scalability (you'd likely have a much larger blockchain than with bitcoin). I remember a proposal from a while ago by someone else that was essentially a PGP-encrypted RSS scheme. You encrypted each message for the intended recipient and recipients would subscribe (or choose not to) to a sender's feed. Bitmessage seems to have the advantage of being peer-to-peer, so RSS broadcast is not an issue.