Integrations

Send email from a Bun server.

Bun runs notix-js as it is, with Node's crypto module available for the webhook verifier. Install it with bun add, read the key from the environment Bun loads from .env, and send from a Bun.serve route.

The send

Send an email from Bun.

bun add notix-js

import { Notix } from "notix-js";

const notix = new Notix(Bun.env.NOTIX_API_KEY!);

Bun.serve({
  port: 3000,
  routes: {
    "/send": {
      POST: async (request) => {
        const { to } = await request.json();
        const { data, error } = await notix.emails.send({
          from: "Acme <receipts@acme.com>",
          to,
          subject: "Your receipt",
          html: "<p>Thanks for your order.</p>",
        });
        return Response.json(error ? { error } : { id: data?.emailId }, { status: error ? 502 : 200 });
      },
    },
  },
});

The from address must be on a domain you have verified in Notix. Step by step: the Node.js quickstart and the longer guide to sending email from Bun.

Environment

One API key, kept on the server.

Create an API key on the API keys page of the Notix console and store it as NOTIX_API_KEY in .env, which Bun loads on its own. Read it only in code that runs on the server, never in anything shipped to a browser.

A Send only key is enough for code that only sends: if it leaks, it cannot read your contacts or delete a domain.

.env

NOTIX_API_KEY=notix_xxxxxxxxxxxx
NOTIX_WEBHOOK_SECRET=whsec_xxxxxxxxxxxx

Webhooks

Verify delivery events over the raw body.

Notix signs every webhook call with the webhook's signing secret: an HMAC-SHA256 of the X-Notix-Timestamp header, a dot and the raw body, sent in X-Notix-Signature. The SDKs check the signature and refuse a call more than 5 minutes old.

Call request.text() before parsing: the signature covers the exact bytes Notix sent.

Webhook handler with notix-js

import { Notix } from "notix-js";

const notix = new Notix(process.env.NOTIX_API_KEY!);
const webhooks = notix.webhooks(process.env.NOTIX_WEBHOOK_SECRET!);

export async function handleNotixWebhook(request: Request): Promise<Response> {
  const rawBody = await request.text();
  try {
    const event = webhooks.constructEvent(rawBody, { headers: request.headers });
    if (event.type === "email.bounced") {
      // Mark the address in your own records.
    }
    return new Response("ok");
  } catch {
    return new Response("invalid signature", { status: 400 });
  }
}

FAQ

Questions, answered.

Does notix-js need anything special on Bun?

No. Install it with bun add notix-js and import it as on Node. Bun reads .env itself, so NOTIX_API_KEY is in Bun.env without a loader.

What if the same request runs twice?

Send an Idempotency-Key header (idempotencyKey in notix-js) with a value that names the thing being sent, such as order-4471-receipt. A repeat with the same key and body returns the first result and sends nothing new; the same key with a different body is refused with 409.

Why is my send refused with a from-address error?

The from address must be on a domain you have verified in Notix. Add the domain in the console, publish the DNS records it shows, and wait for verification; until then, sends from that domain are refused.

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Guides