How many stamps do I need for 2.7 oz? Customer Support 25 August 2022 A standard letter that weighs under one (1) ounce will require 55 cents of postage to mail in 2020. USPS…
Do heavy letters need 2 stamps? Customer Support 1 August 2022 Customers must affix additional postage when mailing letters weighing in excess of 1 ounce and/or letters subject to the nonmachinable…
