If you want to get up and running quickly with the MailUp REST API, the first thing you should do is grab a wrapper.
You can choose between many of the most used programming languages. See Samples and Wrappers.
Some installation notes for each language are available on the code samples and wrappers page.
You need to be neither an OAuth2 guru nor a MailUp expert to have your first application up and running in a very short time if you use our MailUp Demo Client.
MailUp Demo Client is a working example that properly authenticates on the MailUp platform and allows easy access to MailUp resources. You'll probably need less than 15 minutes to have it up and running and use it to learn how to access to MailUp resources.
You can then build your application by simply extending the sample code.
After successful authentication, a token is displayed on the client interface
You can then run some predefined example calls, or build your calls and test them using the "Call Method" button.
In the picture that follows you can see how to create a Group in MailUp List 1 (see the MailUp Glossary for details on Lists and Groups).