Your Default Brand, along with any Custom Brand, can be customized and renamed. The default brand cannot be deleted.
Customizing your default brand is important because:
Every email notification you create uses the Default Brand unless you manually disable Brands in the Notification settings.
If you enable brands on a notification, your Default Brand will be the fallback for any Send API call that does not specify a brand in the user profile.
Setting a custom brand as your default
To set a custom brand as your default, open the Brand settings and click 'Set As Default.'
Keep reading: How to customize or white-label your email notifications.
Watch: Courier live: building and sending brands via the Brands API