How long is Stamps Com postage good for? Customer Support 27 August 2022 Do U.S. Postal stamps expire? No, U.S. postage never expires; you can use existing stamps indefinitely. All postage stamps issued…
Are Stamps Com postmarked? Customer Support 12 August 2022 The IRS and the taxpayers agreed that the Stamps.com postage label was not a postmark made by the USPS and…
