This page contains the technical documents for integrating a retail software system with Klarna's Digital receipts. You'll find the documents useful if you're a part of a retail software company’s integration team or a retailer’s technical team adding the integration.
Scroll down to find the specific integration documentation you need.
Receipts REST API (v1.x)
Learn about using the Receipts REST API to send transactions to our Digital receipts, Printed offers, and SMS receipts services.
Resend digital receipt REST API (v1.x)
Learn about using the Resend digital receipt to re-send digital receipts to an email address directly from the point of sale or another system, for example, a CMS.
sendReceipt API guide (v4.x)
This document covers how to interact with our API to send transactions to our Digital receipts, Printed offers, and SMS receipts services.
Email address validation API
If you've purchased our Email address validation API, you can use the API to validate emails.