Messaging
Delta Chat
Messaging over e-mail — no new accounts, no central server.
open source self-hostable merlinux GmbH (Delta Chat) · DEUses any mailbox as the transport, encrypted with Autocrypt; developed in Freiburg.
Website ↗ Source ↗ Plan “Messaging” with it
How you can run it
| Way | Where the data lives | Price basis | Verdict |
|---|---|---|---|
| Host it myself | your own server or hardware | free | green — You run it yourself: no data leaves your own infrastructure. |
Facts
| Company / project | merlinux GmbH (Delta Chat) (DE) |
|---|---|
| Licence | MPL-2.0 |
| Self-hosting footprint | 0 MB RAM · 0.01 vCPU · 0 GB — uses your existing mail server |
| Commonly replaces | |
| Provenance | curated, verified 2026-09-04 |
Machine-readable: /api/tools/delta-chat.json. Something wrong? Tell us.