Question: how many stamps does an 8.5 x 11 envelope need?
Answer: For customers with larger envelopes, postage costs around $1.00 for the first ounce and $0.20 for each additional ounce. For a legal-sized envelope: Two Forever stamps currently valued at $0.55 per stamp) are needed to mail a one-ounce legal-sized envelope (9½” by 15” envelope).