ShipRush USPS COD is supported with Endicia accounts. Descartes ShipRush Web can print the four-page or two-page COD form on laser or thermal printers.
A ShipRush USPS Corporate account is needed for COD Express Returns. To open a Corporate Account, use this USPS form: http://about.usps.com/forms/ps5639.pdf.
The options for ShipRush USPS COD are set on the Carrier's Shipment Defaults page. Do the following:
Display the Shipments Defaults page (SETTINGS > SHIPRUSH USPS > Shipment Defaults).
Select the appropriate COD options (highlighted in the above graphic).