For large envelopes, you can mail them for $1 per ounce of weight. 00 + $0. Each additional ounce will cost you an additional 21 cents. First Class Mail Letter (1 oz.) costs $1.10 per letter. Amounts ...

It can be used when: At least 200 pieces of First Class Mail or Standard A Bulk Mail are sent out The items are the same size and weight, and weigh less than one pound per piece The mailing does not ...