TypeScript · SvelteKit

Send an email from a SvelteKit +server.ts endpoint with @messagebird/sdk. You'll need a Bird API key — create one in Developers → API keys as covered in Send your first email, then put it in .env as BIRD_API_KEY.

1. Install

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npx sv create my-app && cd my-app
npm install @messagebird/sdk
# pnpm add @messagebird/sdk
# yarn add @messagebird/sdk
# bun add @messagebird/sdk

2. Send

Create src/routes/api/send/+server.ts — +server.ts files run only on the server:

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import { json } from "@sveltejs/kit";
import { BirdClient } from "@messagebird/sdk";

const bird = new BirdClient({ apiKey: process.env.BIRD_API_KEY! });

export async function POST() {
  const msg = await bird.email.send({
    from: "onboarding@messagebird.dev",
    to: ["delivered@messagebird.dev"],
    subject: "Hello from Bird",
    html: "<p>My first Bird email.</p>",
  });

  console.log(msg.id, msg.status); // "em_…", "accepted"
  return json({ id: msg.id, status: msg.status });
}

onboarding@messagebird.dev is Bird's shared onboarding sender and delivered@messagebird.dev is a sandbox recipient that always delivers — no domain verification needed. The region is inferred from your key's bk_us1_ / bk_eu1_ prefix, so there's no base URL to configure. The SDK auto-generates an Idempotency-Key per call, so retried sends are safe.

3. Try it

Run the dev server and POST to the endpoint:

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npm run dev
curl -X POST http://localhost:5173/api/send

The API responds with 202 — Bird has accepted the message and delivers it asynchronously:

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{
  "id": "em_019c1930687b7bfa8a1b2c3d4e5f6789",
  "status": "accepted"
}

Next steps

TypeScript email SDK — the full email surface: send, get, list, and the error model.
Send your first email — creating an API key and the full set of sandbox addresses.
Sending domains — verify your own domain for production sending.
Email API reference — the full request and response schema.