Priority Mail, including Priority Mail Flat Rate shipping products, has fast shipping times (2-3 days) with flexible prices. Get free flat rate boxes and print postage labels online.

USPS postage rates offer low-cost mailing and shipping prices for domestic & international customers. See Forever postage stamp prices and other postage rates.

Priority Mail ® service offers a variety of Flat-Rate Boxes and Envelopes that ship for the same price to any domestic address, regardless of how much they weigh or how far they’re going.

Priority Mail Express items, including Priority Mail Express Flat Rate shipping products, are delivered in 1-3 days to most U.S. locations. See USPS economical prices, free shipping …

For parcels that measure in combined length and girth more than 108 inches but not more than 130 inches, use the oversized price, regardless of weight, based on the applicable zone.

Calculate Postcard price View Flat Rate Envelopes View Flat Rate Boxes Calculate price based on Shape and Size

The Priority Mail Flat Rate® Medium Box is a quick, easy, and convenient way for you to ship USPS Priority Mail® packages. The Priority Mail Flat Rate® Medium Box features …

Tracking and insurance are included, shipping boxes and envelopes are free, and with Priority Mail Flat Rate ®, you don't need to weigh shipments 70 lbs and under.

Note: Flat Rate prices are available when material is sent in a USPS - produced Flat Rate Envelope or Box. When sealing a Flat Rate Box or Flat Rate Envelope, the container flaps …

Pack of 10 or 25 12-1/4" (L) x 12" (W) x 8-1/2" (H) $0.00 Priority Mail® Forever Prepaid Flat Rate Small Box Includes Customer's Return Address 8-11/16" (L) x 5-7/16" (W) x 1-3/4" (H) $12.60