Welcome to MailerLite API docs

Learn how to build, integrate, and grow with MailerLite.

API reference ->

Discover how to use our SDKs. Push or pull data from our RESTful API.

Guides ->

Dive deep into our integrations. Create a connection between your selected service and MailerLite.

Generate API key ->

Learn how to generate or locate your API key.

Knowledge base ->

Find articles and video tutorials to help you use MailerLite.

Frequently Asked Questions

What is the difference between this and Classic API?

This is the latest version of the MailerLite API and it follows date-based versioning. We released it on March 22nd, 2022 alongside the new version of MailerLite.
API V1 and V2 only works with MailerLite Classic and will eventually be deprecated.

Which account version I use?

Accounts created before March 22nd, 2022 use MailerLite Classic. Accounts created after March 22nd, 2022 use the new MailerLite.

Which API version shall I use?

MailerLite Classic account users should use API V1 or V2 consider eventually migrating to the new MailerLite.
All new MailerLite accounts should use this latest and improved API.