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Docker and Compose support is provided through a standalone repo at https://github.com/chatmail/docker, add reusable Docker build/test CI jobs to staging workflows and a Docker docs stub pointing to the chatmail/docker repository. Requires CHATMAIL_DOCKER_DISPATCH_TOKEN secret in relay repo settings (fine-grained PAT with contents:write on chatmail/docker).
Chatmail relays for end-to-end encrypted email
Chatmail relay servers are interoperable Mail Transport Agents (MTAs) designed for:
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Zero State: no private data or metadata collected, messages are auto-deleted, low disk usage
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Instant/Realtime: sub-second message delivery, realtime P2P streaming, privacy-preserving Push Notifications for Apple, Google, and Huawei;
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Security Enforcement: only strict TLS, DKIM and OpenPGP with minimized metadata accepted
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Reliable Federation and Decentralization: No spam or IP reputation checks, federating depends on established IETF standards and protocols.
This repository contains everything needed to setup a ready-to-use chatmail relay on an ssh-reachable host. For getting started and more information please refer to the web version of this repositories' documentation at