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FIRST-CLASS MAIL LETTER 2017 POSTAGE RATES 2016 POSTAGE RATES INCREASE/DECREASE. First-Class Mail Letter (1 oz.) - Retail/Post Office Rate $0.49 $0.47 $0.02. Metered Mail (1 oz.) - Online Postage Providers and Postage Meters $0.46 $0.465 -$0.005. First-Class Mail Letter - each additional ounce $0.21 $0.21 NO CHANGE.
NEW! 2014 rates TRACKING 48Â¢ 49Â¢ The USPS has introduced a new First-Class Mail letter rate for the âMetered Mailâ category, which includes online postage providers and postage meters. This new rate is $0.48, one cent below the retail/Post Office rate of $0.49 for First-Class Mail Letters.ach additional ounce will cost an extra $0.21 (one cent increase from 2013).â¢ NEW! The USPS has introduced a new First-Class Mail letter rate for the âMetered Mailâ category, which includes online postage providers and postage meters.