jcoffey-dev
a63839f6b0
SPEC 2.2a says INBUXA writes its own when the repository is first published, and it is. Until now the public repository carried Stalwart's: a security policy telling people to report vulnerabilities to Stalwart Labs, and a contributing guide whose policy is that pull requests from anyone not on upstream's vouched list are closed automatically. Neither is this project's, and both were being offered to anyone who looked. So: a security policy that says where to send a report, and what happens if it turns out to be upstream's bug rather than ours; a contributing guide that says what a fork of someone else's code needs from a contributor, including the clean-room question, since the record has to stay true; the Contributor Covenant; and a sponsor link. Upstream's two security documents move to .github-upstream/ beside its workflows -- kept, not used, not presented as ours. CI builds the server and compiles every test target, and deliberately runs no suite. The unit tests only build with the integration crate in the graph, and the integration suites want a STORE, fixed ports and a container apiece, so running them here would mean a tick that skipped everything or a cross that means "the runner has no Redis". The workflow says as much, so nobody has to rediscover it. Also ignores /artifact: two hand-built binaries, ~190 MB, one `git add -A` away from a public repository.
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.
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, anddocs/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, modified by Coffey Labs in 2026. Upstream's copyright notices are kept on every file they cover, and every upstream file this fork changed says so in its header, under the notice it came with. 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.