# SMTP EmDash bundle ## What lives in this repo The SMTP repository includes an `emdash-plugin/` directory that builds a sandbox-compatible EmDash publish bundle. ## Useful commands Build the sandbox entry: ```bash bunx tsup --config emdash-plugin/tsup.config.ts ``` Bundle the plugin for submission: ```bash bunx emdash plugin bundle --dir emdash-plugin ``` ## What the bundle contains The EmDash bundle is expected to include the publish artifacts required by the marketplace, including a `manifest.json` and sandbox backend output. ## When to use it Use the EmDash bundle when you want the SMTP provider exposed inside EmDash as a sandbox backend instead of wiring the package manually in a separate integration layer. ## Related package docs - Use the normal library API from [Quickstart](/docs/smtp/quickstart) - Review the Worker-facing transport options in [API reference](/docs/smtp/api-reference)