Postage Rates 2024 Flat Envelope. Find out the postage charges for domestic, international and miscellaneous services offered by india post. — find out the new prices for priority mail, priority mail express, parcel select, usps ground advantage and other services starting from jan.
— the baseline postage rate to mail a flat/large envelope has increased from $1.35 to $1.39 in postage, but the price for each additional ounce also stayed the same. — learn about the usps price increase for mailing services that will go into effect july 14, 2024.