The U.S. Postal Service is discontinuing production of its flat-rate prepaid Priority Mail envelope franked with an imprinted postage stamp.
The Sad Truth Is That You Can't Return Postal Kiosk Stamps – Consumerist
Mailing and Shipping Services
Express Mail Flat Rate, USPS Overnight Shipping
Some thieving asshole opened son's USPS priority express mail, stole birthday $ from his grandparents, replaced it w/“Monica's” card (but not her necklace), taped it shut & sent it along. What recourse
HOW TO SELF ADDRESSED PREPAID ENVELOPE FOR USCIS OR EMBASSY FOR FOREIGN COUNTRY
What is a self addressed stamped envelope and how do they work? - Quora
Stamped Envelopes
Includes Customers Return Address
Priority Mail Forever Prepaid Flat Rate Padded Envelope - PPEP14PE
USPS Certified Mail Costs & Rates Updated for 2024 - PostGrid