January 28, 2021 Mail Services would like to share with everyone the new USPS Postage Rates effective Jan. 24, 2021. If you have any questions please contact Mail Services 256-824-6116 First Class Mail Letters - 2021 Rates INCREASE PER LETTER - 2021 Rates vs. 2020 Rates Mailpiece Weight 2021 2020 Increase Letters - 1 oz. $0.55 $0.55 $0.00 Letters - Additional Ounces $0.20 $0.15 $0.05 Metered Mail Letters (Stamps.com Rate) - 1 oz. $0.51 $0.50 $0.01 Metered Mail Letters (Stamps.com Rate) - Additional Ounces $0.20 $0.15 $0.05 Flat/Large Envelope - 1 oz. $1.00 $1.00 $0.00 Flat/Large Envelope - Additional Ounces $0.20 $0.20 $0.00 Postcards $0.36 $0.35 $0.01 International Letters - 1 oz. (County Groups 1-9) $1.15 $1.15 $0.00 International Postcard (County Groups 1-9) $1.15 $1.15 $0.00 Priority Mail will see an average rate increase of 3.6% in 2021. Priority Mail Express will see an overall rate increase of 2.5% in 2021. For more information: 2021 Postage Rate Increase