PackageHub can be tested in the Sandbox environment and Production environment.
All Sandbox requests pointing to https://packagehub-api-qa.visiblescm.com/ will be a test.
In the Production environment, requests pointing to https://packagehub-api.visiblescm.com/ using the
Use the API Key and API Secret to generate a Production Test Token
Labels printed in Production with a Test Token will not incur a charge on your account. You will need to fund the Production Test Account prior to generating Production Test labels.
Note: This is only currently available for eVS/ePostage USPS shipments, in PackageHub v3