Getting started with the MailUp API

See our Integrations Catalog for more information and technical details on our ready-to-go integrations.

API use policy

Please read our documentation to know API terms of use, access duration, technical considerations, and more.

MailUp REST API v1.1

Check out v1.1 of the MailUp REST API, which introduces new methods, built-in filtering, sorting, and much more.

Subscribe, update, setup campaigns, ...

Remotely execute many of the tasks you can perform in the MailUp admin console. See the API library for all the details.

Send transactional messages via SMTP or API

Send transactional messages with SMTP+, MailUp's built-in high deliverability SMTP relay service, or the MailUp API. 

Keep data synchronized via Webhooks

With MailUp 8 we have introduced Webhooks for near real-time updates from MailUp to your applications (e.g. unsubscribe).

Exchange large amounts of data via FTP

You can use our FTP-based integration to exchange large amounts of data between MailUp and other applications.

Can't find what you are looking for?

We've been around for many years, and we are here to help. Contact us for more information on integrating with MailUp.

Build your own

Get the API keys and build your own integration between MailUp and another application.