The difference between Production and Test environments

Every Courier tenant has two notification development environments: “Live” and “Test”. The two environments are isolated from one another, and all the assets within them (templates, brands, tags, categories integrations, API keys, log data, etc.) belong only to that environment.

Any changes made to a template and its associated assets are only applied within the current environment until you migrate the template and overwrite any changes to the corresponding Notification ID and assets in the other environment.