In order to add your existing Express 1 account via your Appath dashboard, you will need to follow a couple of simple steps:
1. Go to Settings, in the top right,
2. Click on Shipping Carriers,
3. Go to Add a Carrier, top right
4. Next, click on the Express 1 logo, from the Supported Carriers list.
5. A new window will come up that will allow you to add your Account ID and Passphrase. As soon as you do so, simply click on Add Carrier at the bottom and that’s it.