First-Class Mail is a fast, low-cost way to send envelopes and postcards. See First-Class Mail and Forever stamp prices for a letter and postcard.

First-Class Mail® service is the least expensive, most immediate options for mailing postcards, letters, and large envelopes (flats) to retail customers at retail pricing. Commercial pricing, which is discounted from retail pricing, is available as First-Class Mail service for customers with large volumes of mail and who invest time preparing ...

First-Class Mail postage includes forwarding and return services. You can enhance the service, security, and convenience of First-Class Mail by adding extra services such as Registered Mail and Certified Mail.

First-Class Mail Mail in 1–5 Business Days. First-Class Mail ® is an affordable mail service for standard-sized, single-piece envelopes weighing up to 3.5 oz and large envelopes weighing up to 13 oz. Prices start at $0.73 at a Post Office. Buy Stamps for First-Class Mail. Learn More about First-Class Mail

When a piece of First-Class Mail exceeds any one of the maximum measurements of a letter, it is classified and priced as a large envelope (flat). The maximum weight for letter-size pieces is 3.5 ounces.

USPS postage rates offer low-cost mailing and shipping prices for domestic & international customers. See Forever postage stamp prices and other postage rates. ... Envelopes. From $30.90 at Post Office. From $29.66 for Commercial Base. From $29.66 for Commercial Plus. ... XLSX file for First-Class Mail –Every Door Direct Mail Retail ...

TIP: As a rule of thumb, you can send 1 oz (4 sheets of printer paper and a business-sized envelope) for 1 First-Class Mail ® Forever ® stamp (currently $0.73). The postage for a large envelope (or flat) starts at $1.50 for 1 oz.

First-Class Mail letters that have one or more nonmachinable characteristics will pay a nonmachinable surcharge. Customers can be unpleasantly surprised that they must pay extra postage when, for example, they mail a square greeting card.

First-Class Mail® Postcards, letters, large envelopes, and small packages can be sent using First-Class Mail. This service is typically used for personal and business correspondence and bills.

Large Envelope. Property Minimum Maximum; Length: 11-1/2 inches: 15 inches: Height: 6-1/8 inches: 12 inches: Thickness: 1/4 inch: 3/4 inch: ... (perpendicular to the length) Length plus girth combined cannot exceed 108 inches. (USPS Ground Advantage® cannot exceed 130 inches.) HELPFUL LINKS. Contact Us; Site Index; FAQs; USPS JOBS. Careers; ON ...