Confidant Mail is an open-source non-SMTP cryptographic email system optimized for large file attachments. It has its own client, server, and protocol. It uses GNU Privacy Guard (GPG) for content encryption and authentication, and TLS 1.2 with ephemeral keys for transport encryption. It supports unlimited attachments (>4GB) and forwarding with signature intact. Kademlia or DNS is used for key lookup. TOR and I2P anonymity is optional. Servers operate in replicated pairs. You can use your existing email address and GPG key. There is a Windows installer and automatic client configuration, so a Windows user can be online in under five minutes. Linux and MacOS users will have to install some prerequisites. The site has a test server pair online so you can try the system out. http://www.confidantmail.org Mike Ingle <mike@confidantmail.org> d2b89e6f95e72e26e0c917d02d1847dfecfcd0c2