API Documentation

Complete reference for the resletter REST API

Note: API access requires a Starter plan or above. Free plan users do not have API access.

Introduction

The resletter API is organized around REST. Our API has predictable resource-oriented URLs, accepts JSON-encoded request bodies, returns JSON-encoded responses, and uses standard HTTP response codes and authentication.

Base URL

https://app.resletter.com/api/v1

Quick Start

Get started quickly with our official SDKs:

Node.js SDK

Full TypeScript support for Node.js apps

Python SDK

Django, Flask, FastAPI, and more

API Reference

Explore the available API endpoints:

Authentication

API keys and authentication

Subscribers

Manage subscribers programmatically

Groups

Organize subscribers into segments

Campaigns

Create and manage email campaigns

Events

Track custom events for automations

Error Handling

HTTP status codes and error responses

Need Help?

Have questions about the API? Our support team is here to help.

Contact Support