If you put a stamp on a BRM envelope, the recipient is typically not charged for the postage.
The phrase primarily refers to the United States Postal Service (USPS) Business Reply Mail (BRM) system, where a business pays the postage for a recipient's response. It also refers to a 2018 independent film. ✉️ Business Reply Mail (BRM) No Postage Necessary
The words "BUSINESS REPLY MAIL" must appear in capital letters (at least 3/16 inch high) above the address. If you put a stamp on a BRM