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# koushin
[](https://godoc.org/git.sr.ht/~emersion/koushin)
A simple and extensible webmail.
## Usage
Assuming SRV DNS records are properly set up (see [RFC 6186]):
go run ./cmd/koushin example.org
To manually specify upstream servers:
go run ./cmd/koushin imaps://mail.example.org:993 smtps://mail.example.org:465
See `-h` for more information.
## Themes
They should be put in `themes/<name>/`.
Templates in `themes/<name>/*.html` override default templates in plugins.
Assets in `themes/<name>/assets/*` are served by the HTTP server at
`/themes/<name>/assets/*`.
## Plugins
Plugins can be written in Go or in Lua and live in `plugins/<name>/`.
Plugins can provide their own templates in `plugins/<name>/public/*.html`.
Assets in `plugins/<name>/public/assets/*` are served by the HTTP server at
`/plugins/<name>/assets/*`.
### Go plugins
They can use the [Go plugin helpers] and need to be included at compile-time in
`cmd/koushin/main.go`.
### Lua plugins
The entry point is at `plugins/<name>/main.lua`.
API:
* `koushin.on_render(name, f)`: prior to rendering the template `name`, call
`f` with the template data (the special name `*` matches all templates)
* `koushin.set_filter(name, f)`: set a template function
* `koushin.set_route(method, path, f)`: register a new HTTP route, `f` will be
called with the HTTP context
## Hot reload
Lua plugins and templates can be reloaded by sending `SIGUSR1` to koushin.
killall -USR1 koushin
## Contributing
Send patches on the [mailing list], report bugs on the [issue tracker].
## License
MIT
[RFC 6186]: https://tools.ietf.org/html/rfc6186
[Go plugin helpers]: https://godoc.org/git.sr.ht/~emersion/koushin#GoPlugin
[mailing list]: https://lists.sr.ht/~sircmpwn/koushin
[issue tracker]: https://todo.sr.ht/~sircmpwn/koushin
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