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API Version 1.1 - See our Changelog for the latest updates.
Welcome to Unosend - the email sending API with competitive pricing and high limits. One API. Infinite Emails.

Quick Start

Get up and running in 5 minutes

Send Your First Email

Learn the basics of sending emails

Domain Setup

Verify your sending domain

Authentication

Secure your API requests

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Quick Example

Send your first email with a simple API call. Works with any programming language! 
curl -X POST https://www.unosend.co/api/v1/emails \
  -H "Authorization: Bearer un_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "[email protected]",
    "to": ["[email protected]"],
    "subject": "Welcome to Unosend!",
    "html": "<h1>Hello World</h1><p>Welcome to Unosend!</p>"
  }'

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API Overview

Emails

Send transactional emails with rich HTML content

Domains

Verify and manage your sending domains

Webhooks

Receive real-time notifications for email events

Templates

Create and manage reusable email templates

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Features

Send millions of emails with our reliable infrastructure. No rate limiting for Pro and Enterprise plans.
Get instant notifications for email events like delivery, opens, clicks, and bounces.
Authenticate your domains with SPF, DKIM, and DMARC for better deliverability.
Receive and parse incoming emails with attachments and automatic reply detection.

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REST API

Our API works with any programming language - no SDK required! Just make HTTP requests.

cURL

Command line

JavaScript

fetch / axios / node

Python

requests / httpx

Go

net/http

PHP

curl / guzzle

Ruby

net/http / faraday

Java

HttpClient

C#

HttpClient

CLI

npm install -g unosend

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Need Help?

Contact Support

Get help from our support team

API Status

Check our API status and uptime