jcoffey-dev fd7747ef21 Fork tooling: record what the compat tests compare against
Three of the eight compat tests check INBUXA's data against a recording of
how the Enterprise server read it, and that recording can only be made
while that server is still up. SPEC §7 gives it 45 days from the notice, so
the capture shouldn't wait on the cutover being scheduled.

record-compat.py writes all three files: the tenants with their quotas and
members and what each tenant administrator sees, every masked address and
its state, and every archived item whole, since undelete_compat compares
every property it recorded. It only reads, and refuses to send a method
that isn't /get or /query, because it is the one tool here that runs
against the live server. Queries follow their pages, so a server that caps
one doesn't leave a short recording behind.

Exercised against the fork's own test server, which answers the same JMAP:
3 tenants with members, 8 masked addresses and 3 archived items, each in
the shape its test reads.
2026-09-19 18:42:25 -07:00
2026-09-18 10:21:56 -07:00
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2026-09-18 10:21:56 -07:00
2026-09-18 10:21:56 -07:00

inbuxa

A complete mail and collaboration server, every feature included, under the AGPL


INBUXA is a mail and collaboration server: JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV and WebDAV, in one Rust binary, with ihasmail as its web front end. It is a fork of Stalwart. Project site: inbuxa.org (not up yet).

Stalwart ships some features only in a paid Enterprise Edition: multi-tenancy, masked email, undelete and others. INBUXA ships everything to everybody under the AGPL-3.0, rebuilding those features independently and without using any of Stalwart's Enterprise code.

Status: in development, not released. The fork builds, passes its unit tests, and runs as a working mail server. The Enterprise features are being specified and haven't been rebuilt yet. Don't run it in production.

What's different from Stalwart

  • Every feature, one edition. No license key, no edition checks, no upsell. See docs/spec/SPEC.md §4 for the features being rebuilt, and docs/spec/features/ for each one's specification.
  • Webmail and administration by ihasmail, as a separate service that can run beside the server or elsewhere. Stalwart's own web interface is removed, so there's no web front end on the mail host.
  • Clean-room rebuilds. Enterprise-only code is stripped from every upstream release before it's imported. The rebuilt features are written from specifications that use only public sources (docs/spec/SPEC.md §3).

How the fork is kept

Upstream releases arrive as stripped snapshots, never with upstream's git history, which contains Enterprise code. tools/fork/strip.py builds each snapshot on top of upstream's own ossify.py, then verifies it independently. The report for every import is in docs/fork/strip-reports/. See docs/spec/SPEC.md §2.

Building

cargo build --release -p inbuxa          # the binary is target/release/inbuxa
docker build -t inbuxa .                 # or the container image

Settings are read from INBUXA_* environment variables. An existing Stalwart install's STALWART_* variables still work, with a warning to rename them. New installs keep their data in /var/lib/inbuxa and logs in /var/log/inbuxa. Existing installs keep the paths their configuration already names, so none of their data moves.

License and credits

INBUXA is free software under the GNU Affero General Public License, version 3.

It is a fork of Stalwart, copyright © Stalwart Labs LLC. Upstream's copyright notices are kept on every file they cover. Stalwart's files are dual-licensed AGPL-3.0-only or Stalwart's Enterprise License, and INBUXA takes them under the AGPL-3.0 only. A few of those files also carry code from other projects under MIT or BSD licenses, which stays under those licenses; THIRD-PARTY.md lists it with its notices. "Stalwart" is Stalwart Labs' name. INBUXA isn't affiliated with or endorsed by Stalwart Labs.

The INBUXA mark reuses ihasmail's cat-and-envelope artwork.

S
Description
Imported from github.com during the 2026-09-20 standup (local dir: inbuxa-server)
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