Hi there,
Our company is rental-based, so we're always generating return labels to ship with the item. It would definitely shorten our time between shipments and increase overall output if we were able to receive an email that a package is on its way.
Currently we have to have the customer tell us that they've shipped something back, we wait a day for USPS to update the tracking, check the tracking just to make sure, and then ship out. Customers forget to let us know, too, so it's by no means an effective system.
Thanks!
Styles