OnShip multi-carrier shipping software can process USPS, UPS and FedEx Return labels.
Create a PB Standard Returns Label — Global Ecommerce APIs
NetSuite Applications Suite - UPS Customer Returns
Online Postage Services Part 1: Endicia Innovates
Confirm Box Weight, Dimension, and Print out the Shipping Label - ASellerTool Scoutly and TurboLister User Guide - 1
Return Labels Guide: Making Return Labels for Ecommerce
There are 160 pcs of our mailing label,4.5x3.5 Inch Shipping Address labels can be used when you mail the package. To/from Label Stickers including
to from Return Address Mailing Labels 160pcs Blank Mail Shipping Permanent Adhesive Valentines's Postage Guaranteed Stickers 4.5x3.5 Inch Handwriting
Return Labels – ShipStation Help U.S.
Create and Print Shipping Labels
Generate Return Labels - Loop Returns Help Center