---
url: "https://smashsend.com/transactional-email-api"
title: Transactional Email API - Developer-First Email Infrastructure | SMASHSEND
domain: smashsend.com
locale: en
type: landing
words: 527
cited_by: 0
indexed_by: stealpage
---

[

![SMASHSEND email marketing - The #1 Email Marketing Tool that turns emails into revenue](https://smashsend.com/_next/static/media/smashsend_dark.da05b6ec.svg)

![SMASHSEND email marketing - The #1 Email Marketing Tool that turns emails into revenue](https://smashsend.com/_next/static/media/smashsend_dark.da05b6ec.svg)

](https://smashsend.com/)

Features

Integrations & API

Resources

1.  [
    
    Home
    
    ](https://smashsend.com/)

/

3.  [
    
    Transactional Email API
    
    ](https://smashsend.com/transactional-email-api)

## Transactional emails your users actually get

Developer-first email API that delivers critical emails in milliseconds, not minutes. Built for reliability, speed, and scale.

100k emails/month free · No credit card

terminal — @smashsend/node

```
$ npm install @smashsend/node

✓ Installed in 1.2s

const smashsend = new SmashSend('your-api-key');

await smashsend.emails.send({
  to: 'user@example.com',
  subject: 'Welcome!',
  html: '<h1>Hello World</h1>'
});

✓ Email delivered in 47ms
```

## Built for speed & reliability

When your business depends on email delivery, you need infrastructure you can trust. That's why leading companies rely on SMASHSEND.

30M+

Emails sent

12M+

Contacts

99%

Delivery rate

## Simple API, powerful features

### RESTful API

Clean, intuitive API design with comprehensive documentation. SDKs available for Node.js, Python, Ruby, PHP, Go, and more.

### Real-time webhooks

Get instant notifications for opens, clicks, bounces, and spam reports. Build reactive workflows with reliable webhook delivery.

### Enterprise security

SOC 2 Type II certified. End-to-end encryption, dedicated IPs, and custom domains. GDPR and CCPA compliant.

### Smart delivery

Automatic retry logic, bounce handling, and reputation monitoring. We optimize delivery so you don't have to.

### Batch sending

Send to thousands of recipients with a single API call. Automatic throttling and queue management included.

### Template engine

Store and version your email templates. Use variables, conditionals, and loops with our powerful templating language.

## Start sending in minutes

Our API is designed to get you up and running fast. Choose your language and start sending.

```
const smashsend = require('smashsend');
const client = smashsend('YOUR_API_KEY');

// Send a transactional email
await client.emails.send({
  to: 'customer@example.com',
  from: 'your-app@yourdomain.com',
  subject: 'Welcome to Our Platform!',
  html: '<h1>Thanks for signing up!</h1>',
  text: 'Thanks for signing up!'
});
```

## Perfect for every use case

E-commerce

### Every step of the order

Order confirmations, shipping notifications, cart abandonment, and review requests.

Authentication

### The emails users wait for

Welcome emails, password resets, 2FA codes, and account verification.

SaaS platforms

### Keep accounts informed

Usage alerts, invoice emails, team invitations, and trial expiration notices.

## Advanced features for scale

As you grow, SMASHSEND grows with you. Enterprise features available from day one, no upgrades needed.

### Automatic retries

Failed deliveries are automatically retried with exponential backoff. Our smart retry logic ensures maximum deliverability without overwhelming recipient servers.

### Detailed analytics

Track every email with real-time analytics. Monitor delivery rates, open rates, click-through rates, and more. Export data or use our webhook API for custom analytics.

### Global infrastructure

Send from data centers worldwide for optimal delivery speed. Automatic geo-routing ensures your emails reach recipients fast, wherever they are.

### Spam protection

Built-in spam detection and prevention. We monitor your reputation and provide feedback to ensure your emails reach the inbox, not spam.

## Trusted by developers worldwide

“SMASHSEND's API is exactly what we needed. Clean, fast, and reliable. We migrated in a day and haven't looked back.” — Alex Chen, CTO at TechStartup

-   **50% faster** API response times than legacy providers
-   **3x better** deliverability than commodity relays
-   **60% cheaper** than raw cloud sending, with support included

## Complete email platform

Need more than transactional emails? SMASHSEND has you covered.

## Start sending in 5 minutes

Get started with our lightning-fast transactional email infrastructure.

No credit card required • 99% uptime SLA