DeltaChat
Self-hosted team communication you control
Open source communication software for teams that want privacy, operator control, and a deployment story they can actually reason about.
Built for practical self-hosting, clear infrastructure boundaries, and straightforward deployment.
Core benefits
Built around the fundamentals that matter
DeltaChat focuses on the fundamentals that matter most in self-hosted environments: control, clarity, deployability, and predictable runtime behavior.
Self-hosted by design
Run DeltaChat on infrastructure you control, with deployment centered on your environment, not a vendor control plane.
Open source under AGPLv3
Source-available and positioned for serious self-hosted use, with licensing aligned to operator-facing deployment.
No hidden telemetry
Trust should come from documented behavior, observable runtime activity, and clear network expectations.
Practical install path
A direct operator-first setup flow built around Docker Compose, staged startup, and explicit infrastructure requirements.
Operator-friendly runtime
Built for environments where logs, ingress, certificates, and deployment boundaries need to be understood clearly.
Private by design
Communication infrastructure for teams that want more control over data, runtime behavior, and operational ownership.
Built for people who run their own infrastructure
Trust through clarity, not marketing language
DeltaChat is aimed at operators who care about runtime behavior, deployment boundaries, and infrastructure they can understand.
Positioning
Practical communication for teams that self-host
Not a Slack clone
Not a contact center
Not a protocol
DeltaChat is positioned as deployable communication infrastructure for teams that want more control, more privacy, and a more predictable self-hosted runtime.
Open source
Open source under AGPLv3
DeltaChat is developed as open source software for self-hosted teams and operators who want source availability, practical deployment, and infrastructure they can evaluate in their own environment.
Get started with DeltaChat
Follow the streamlined install path to get DeltaChat running quickly, then move into more advanced configuration only when you need it.