API Reference Introduction

Overview

The Sendly API provides a comprehensive set of endpoints for sending emails, managing domains, tracking delivery, and handling webhooks.

https://api.usesendly.app/v1

All API requests require authentication using your API key:

Authorization: Bearer YOUR_API_KEY

All responses are in JSON format.

Limit: 1,000 requests per minute
Headers:
- X-RateLimit-Limit: Total requests allowed
- X-RateLimit-Remaining: Requests remaining
- X-RateLimit-Reset: Unix timestamp when limit resets

Errors are returned with appropriate HTTP status codes and error details:

{
  "code": "INVALID_EMAIL",
  "message": "The email address is invalid"
}

Choose your preferred integration method:

TypeScript/JavaScript SDK

REST API with cURL

SMTP Integration