OnShip multi-carrier shipping software can process USPS, UPS and FedEx Return labels.
Is The Return Label In Box Still A Thing? Here's what to do instead.
How To Return a Package
Generate Return Label & Drop Package at the UPS Access Point
Can I use a different service for USPS return labels?
Return Shipping Label Upload? : r/
Return Shipping Labels for Online Sellers
print return label
UPS Dropoff Packages – Fedex Dropoff Packages – USPS Dropoff
How can I create return shipping labels on ShipNerd? – ShipNerd Support
What the Different Parts of a Package Shipping Label Mean
How To Create A Return Shipping Label - ShippyPro Blog
Print UPS Return Label for WooCommerce & Shopify Shipments
USPS Return Label - A Complete Guide