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