Postage Rates 2024 Large Envelopes. Boxes and envelopes are delivered with your regular mail usually within 7 to 10 business days. Usps will adjust mailing services prices, effective sunday, july 14.

The price for each additional ounce also increased from 24 cents to 27 cents per additional ounce. Letters (maximum weight 2 kg) for a weight not exceeding 20 gms.