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1-3 Business Days. First-Class MailÂ® is a fast, affordable way to send envelopes and lightweight packages. Itâs perfect for business and personal correspondence, cards, brochures, and lightweight merchandise. The First-Class Mail ForeverÂ® Stamp price is $0.49; First-Class Mail Postcard Stamp price is $0.34.
As of June 2014, the base rate of a U.S. first-class postage stamp is 49 cents. This rate applies to standard-sized mailings weighing 1 ounce or less. Twenty-one cents is added for each additional ounce.