Bitmessage

Bitmessage: Encrypt email messages and their metadata to ensure your conversations remain private

Bitmessage is a peer-to-peer communication program that lets you encrypt your email messages using public keys so no unauthorized parties are able to access them.

The tool has a built-in anonymous P2P network through which encrypted messages are scrambled with those of other users, making it practically impossible to track the originating computers.

Bitmessage is fairly easy to use thanks to its tabbed interface that offers a quick way to switch between its main functions, such as Inbox, Subscriptions, Send, Blacklist, Sent, Address Book and so on.

The application lets you store sent messages as a list and you can send a message to one or multiple contacts, as well as broadcast it to all those who are subscribed to your address. To create a new identity, Bitmessage lets you use a passphrase or you can set the app to generate random numbers.