Send transactional email
at any scale

Most email APIs were not built for speed

Legacy providers use form-encoded payloads, lack idempotency keys, and add latency at every layer. When you need to confirm an order, reset a password, or notify a user, every millisecond of delay is visible. Nuntly is built from the ground up for low-latency transactional sending with a clean JSON API.

Send your first email in minutes

Install the SDK, set your API key, and send. No boilerplate, no form-encoded payloads.

import { Nuntly } from '@nuntly/sdk';

const nuntly = new Nuntly({ apiKey: process.env.NUNTLY_API_KEY });

// Send a transactional email
const email = await nuntly.emails.send({
  from: 'hello@acme.com',
  to: 'user@example.com',
  subject: 'Your order is confirmed',
  html: '<p>Order #4821 has been confirmed.</p>',

  // Optional: schedule for later
  scheduledAt: '2026-03-10T09:00:00Z',

  // Optional: prevents duplicate sends on retry
  idempotencyKey: `order-confirm-${orderId}`,
});

console.log(email.id); // em_xxxxxxxxxxxx

Everything you need to send reliably

Built for high-throughput transactional sending with developer ergonomics at every layer.

Frequently asked questions

Common questions about this topic.

Explore more