...must be submitted within 60 (sixty) days of the print date. The refund request should be mailed no later than 60 days from print date, so that Endicia has time to process your refund request.
If your mailpiece does not have a confirmation number, tracking number, or customs number, it must be a physical-proof refund.
Important! All refund requests for postage printed using DYMO Stamps or DYMO Printable Postage are physical-proof refund requests.