For Merchants generating labels with USPS and Canada Post's Returnly account. These carriers are enabled by default based on your shipping address.
US-Based Label Generation
For merchants with a US-based “Return To Address,” when using Returnly’s default shipping option your shipping labels are processed by USPS with Commercial Plus pricing. Returnly will generate the lowest cost label for the shipment. USPS labels are generated at the time of RMA creation and available for download/printing by the shopper.
USPS has 2 reference lines on the shipping label. Returnly places the RMA number and the order number in the available reference lines. See the image below for reference.
Unused USPS labels
Generated USPS shipping labels do "expire" in that Returnly will submit an automated request to void the shipping label if it has not been used after 28 calendar days. Once the void request has been placed USPS will process the request and credit the cost of the label back to your shipping account with Returnly. Any credit from voided shipping labels will be applied to your next label invoice. Please allow time for USPS to process the void request after first being submitted.
Canadian Label Generation
For merchants with a Canada-based “Return To Address,” when using Returnly’s default shipping option your shipping labels are processed by Canada Post. These shipping labels do not "expire" in that they are not activated within Canada Post until they are scanned.
Canada Post has 2 reference lines on the shipping label. Returnly automatically fills this reference line with the RMA number. See the image below for reference.
Generated USPS and Canada Post labels are batched together at the end of each day by Returnly to be invoiced to the merchant. Receipts are emailed to the merchant. The batched invoice is charged via Shopify Payments or to the credit card on file. Same for both US and Canada