How much postage to mail a 5.5x8.5 envelope weighing 2.8 ounces?

Answer 1

To mail a 5.5x8.5 envelope weighing 2.8 ounces within the United States, you would typically need to use a first-class stamp. As of my last update, the cost for a first-class letter (up to 1 ounce) is $0.63, and each additional ounce costs around $0.24. Therefore, mailing your 2.8-ounce envelope would likely require approximately $1.11 in postage. It's always a good idea to check the latest rates from the USPS for the most accurate information.