Omnisend developers

Build with Omnisend API

Designed for developers, here is an easy-to-follow resource to integrating with Omnisend via our API.

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Getting started

Not sure where to begin? Browse our guides & API reference to get started. Plus, use our Postman collection for easy API calls.

API Reference

Dive into detailed API documentation designed to streamline your development process.

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Guides

Step into a library of guides dedicated to developers looking to integrate with Omnisend.

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Postman collection

Make streamlined API calls with our pre-built Postman collection.

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Build with Omnisend API

Learn about Omnisend API. Our documentation is here to help with your integration needs.

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201Created Template

400Invalid request body, missing brand ID, invalid template structure, or validation errors

401Authentication is missing or invalid

403Insufficient permissions for this operation

410API version has been retired

413Request body too large - exceeds 1 MB limit

429Rate limit exceeded

500Unexpected error occurred