Bitmessage is a decentralized, trustless, and encrypted messaging protocol that allows users to send messages to individuals or groups. It operates on a peer-to-peer network, eliminating the need for central servers and enhancing security. Bitmessage uses strong authentication, making it difficult for senders to be spoofed, and it aims to protect 'non-content' data, such as sender and receiver information, from passive eavesdroppers.
Bitmessage is available for Windows and OS X. Users can download the client or run the source code on Linux, Windows, or OS X, provided they have PyQt and OpenSSL installed.
A security audit is needed to verify its security fully. Users are advised to be cautious with their addresses and to keep their software up-to-date, as vulnerabilities have been identified in the past.
Users can engage with the Bitmessage community through the Bitmessage subreddit or the official forum at Bitmessage.org/forum.