emdash-resend

Resend email provider plugin for EmDash CMS.

EmDash ships no production email transport — only a dev-console stub — so magic-link login, invites, password recovery and comment notifications all fail with "Email is not configured" until you add a provider. This plugin delivers them through Resend.

If you deploy on Cloudflare Workers, consider the first-party cloudflareEmail() provider instead — it uses the native send_email binding and needs no API key at all. Use this plugin when you want Resend specifically, or when you are not on Workers.

Install

npm install emdash-resend

Requires EmDash >=0.23.0.

Setup

1. Verify your sending domain in Resend

Add and verify the domain you will send from at resend.com/domains. Resend rejects mail from an unverified sender. Then create an API key at resend.com/api-keys.

2. Register the plugin

// astro.config.mjs
import emdash from "emdash/astro";
import { resendEmail } from "emdash-resend";

export default defineConfig({
  integrations: [
    emdash({
      plugins: [
        resendEmail({
          apiKey: process.env.RESEND_API_KEY,
          from: { email: "[email protected]", name: "My Site CMS" },
          replyTo: "[email protected]", // optional
        }),
      ],
    }),
  ],
});

Provide RESEND_API_KEY the way your platform does secrets — wrangler secret put RESEND_API_KEY on Cloudflare, or your host's environment settings elsewhere. The key is read from the environment and is never written to the database.

Misconfiguration fails fast: a missing or malformed apiKey or from throws at config time rather than on the first send.

3. Activate and select it

1. Admin → Extensions — activate emdash-resend.
2. Settings → Email — select it as the email provider, then use the test-send to confirm delivery.

In development EmDash also registers its console provider, so two providers are available and neither is auto-selected. You must pick one in Settings → Email.

Configuration

| Option | Type | Required | Description | | --- | --- | --- | --- | | apiKey | string | Yes | Resend API key. Source from the environment. | | from | string \| { email, name? } | Yes | Sender address. Must be on a domain verified in Resend. | | replyTo | string | No | Reply-To address, for when from is a no-reply address. |

replyTo is configured per-site rather than per-message because EmDash's EmailMessage carries only to, subject, text and html — there is no per-message reply-to to forward.

License

MIT © Zach Bimson