To all the followers of this thread, this may be a 3rd party solution to
this need? I have not used it, but would welcome any feedback if someone
has: https://www.orderdesk.com/
It looks like there is already an automated rule that can be put into
place to utilize the Endicia pay on use feature within Shipstation:
http://help.shipstation.com/customer/portal/articles/1675225-how-can-i-automatically-create-a-return-label-with-...
