The Litmus API

Build the power of Litmus’ email testing and analytics tools directly into your product and give your users more

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High-performance email tools right within your application

Integrate the following tools into your product using the Litmus API and give your users the ability to optimize every email without ever leaving your application.

Apple Mail 8
Apple Mail 9
Outlook 2000
Outlook 2003
Outlook 2013

Instant Previews

Give your users instant previews of their email in 50+ email clients as they build, ensuring compatibility across environments.

Advanced Email Analytics

Give your users the most complete performance data available for email professionals, including device open data, engagement, and more.

Choose the billing model that’s right for you

Whether your clients already have a Litmus subscription, want email testing as part of their subscription with your product, or want the option to choose, we have the API for you. We can even handle the billing (or can leave it to you.) Either way, we’ve got you covered.

$0 per month

We handle the billing

Use OAuth to bring your customers’ Litmus account alive right within your app. We’ll handle the billing side of things.

  • Instant Previews

  • Email Analytics

Custom pricing

You handle the billing

You choose your pricing structure and customers will pay you directly. Then, we’ll charge you at the end of each month.

  • Instant Previews

  • Email Analytics

First and Third Wednesday of the month at 11:30AM EST

API Office Hours: Ask us anything

Join us every other Wednesday for API Office Hours, and our team will be sure to answer any of your questions regarding the Litmus API. API office hours run between 11:30am - 12:00pm EST.

Get answers to your questions

Learn more about an integration with Litmus

Provide us with your details and our partnerships team will be in touch.