Easily integrate your application with MailUp using our new REST API. Many of the tasks that can be performed in the MailUp admin console can now be executed through the REST API, giving you remote and flexible access to many of MailUp's great features.
Email campaigns vs. Transactional Emails
Please note that the REST API is not designed for sending transactional emails. For that purpose, you should instead use MailUp's built-in SMTP relay system, which is included in your accoun at no extra charge.