TIP: Use the USPS ® Price Calculator tool to calculate your domestic postage costs.
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More than 2 cubic feet (3,456 cubic inches): add $15.00.Between 22 and 30 inches long: add $4.00.Package Nonstandard Fee: You’ll pay an extra fee for sending a nonstandard size if your package measures: Large First-Class envelopes (flats) that exceed maximum dimensions or are rigid, non-rectangular, or not uniformly thick are charged package prices. Letters that exceed the First-Class standard envelope maximum length, height, or thickness are charged large envelope (flat) prices. Large Mailpieces, Envelopes, & Small Packages They are charged a nonmachinable surcharge even if they weigh less than 1 oz. Unusually shaped mail, like square or vertical envelopes, lumpy envelopes, rigid envelopes, and mail with clasps, string, or buttons, must be hand-canceled. Additional size restrictions apply depending on the type of mailpiece you're sending.Īdditional Charges for Irregular Mailpieces, Envelopes, & Small Packages Nonmachinable Envelopes All postcards and envelopes (or flats) must be rectangular, otherwise an additional charge may apply.Maximum weight for First-Class Mail letters is 3.5 oz for large First-Class Mail envelopes and parcels, the maximum weight is 13 oz.Large envelopes (flats) start at $1.20.Oversized postcards need letter stamps, which start at $0.60.Standard-sized, rectangular postcard stamps start at $0.44.Square, oversized, or unusually shaped envelope stamps start at $0.99.Standard-sized, rectangular envelope stamps start at $0.60.Standard Letter & Postcard Sizes See Insurance & Extra Services Letters One price for up to 3.5 ounces with commercially priced letters and cards.
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Eligible for delivery confirmation services such as Certified Mail ®.Insurance for loss or damage up to $5,000 for merchandise only.Best priced service for items up to 13 oz.Small packages delivered in 2–5 business days.