If you are interested in trying the Control Panel and the API you can request access to the Sandbox environment by entering your current Qboxmail references.
Once you have filled out the form, an access to the environment will be created and sent via email. We will then contact you by phone or email to give you some details on how the environment works.
The resources created in the Sandbox environment are neither real nor connected to the production environment, the purpose of the Sandbox is to test the functionality of the API and the panel and provide us with useful feedback to resolve any anomalies.
To keep the environment clean every two days, the domains and email boxes created within the sandbox will be automatically deleted.
Here you can find the API documentation