In order to add your existing Endicia 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 Endicia logo, from the Supported Carriers list.
5. A new window will come up that will allow you to add your Account # and Passphrase. As soon as you do so, simply click on Add Carrier at the bottom and that’s it.