Introduction

Get started with the Sendfully API.

Build on top of Sendfully using our REST API. The pages in this section document every endpoint, grouped by resource.

OpenAPI specification

We publish a machine-readable description of the entire API. Point any OpenAPI-compatible tool at the URL below to browse every endpoint or scaffold a client in your language of choice.

• Spec URL: https://api.sendfully.com/v1/openapi.json

Import into an API client

Importing the spec into an API client like Postman or Insomnia is a great way to explore the API. You get every endpoint as a ready-to-run request, with example parameters and response shapes already filled in. Add your API key and start making calls.

• Postman: File → Import → Link, then paste the spec URL.
• Insomnia: Create → Import From → URL, then paste the spec URL.

What's next?

• Browse the endpoints in the sidebar to see each request and response in detail.
• For a walkthrough of sending your first email, see the Quickstart.