Transactional email service

What is a transactional email service?

A transactional email service sends automated, one-to-one emails triggered by user actions. Unlike marketing emails, transactional emails include order confirmations, password resets, welcome emails, and account notifications. They require fast, reliable delivery.

What developers face

• Transactional emails must arrive within seconds. Slow delivery causes user frustration and support tickets.
• Deliverability requires DKIM, SPF, and DMARC setup. Getting it wrong means emails land in spam.
• Without tracking, you cannot tell if critical emails like password resets actually reached the inbox.
• Scaling email infrastructure alongside your product adds operational burden.

Reliable transactional email in a few lines of code

Nuntly handles email authentication, delivery optimization, and event tracking. Focus on your product while we ensure every transactional email arrives.

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

const nuntly = new Nuntly('ny_your_api_key');

await nuntly.emails.send({
  from: 'orders@yourdomain.com',
  to: 'customer@example.com',
  subject: 'Order #4521 confirmed',
  html: '<p>Your order has been confirmed and is being prepared.</p>',
});

Key features

Everything you need to get started.

• Security - DKIM, SPF, DMARC, and encryption built in.
• Observability - Track delivery status for every email.
• Data location - EU data hosting with GDPR compliance.
• Webhooks - Real-time event notifications for your app.

Frequently asked questions

Common questions about this topic.

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