How Many Stamps Do I Need To Mail A 9×12 Envelope?
How Many Stamps Do I Need To Mail A 9×12 Envelope? Once you know the approximate dimension and weight of your envelope, affixing the stamp is very easy task for a proper postage. 9*12 is a standard dimension for the large envelopes and can be mailed at a first ounce rate $1.00 + $0.21 for