PackageHub supports two methods to connect your Carrier Account:
Adding Carrier Accounts via the PackageHub Shipper Portal
After logging into the PackageHub Shipper Portal, click on Apps in the Navigation and click on the app. You can expand the Carrier Account section.
Click on Add Carrier Account and a modal will appear that will prompt you to connect your carrier account.
To use non-USPS carriers with your own carrier account credentials, the PackageHub team can enable the account upon request. The Carrier Account Status will be in the Requested status.