Shipping with Flat Rate Boxes is a breeze. As long as it will fit in the box, it will ship at the same price whenever possible. The boxes are provided by USPS for free, and if your shipment is going ...

Priority Mail rates are up 3.2%. With rates stating at $10.10 for Flat Rate Envelopes, $10.65, for USPS Flat Rate Mailing Box, and $9.35 when using your own box by weight/zone Priority Mail ...

The additional-ounce price for single-piece letters will rise to 28 cents from 24 cents. Post office box ... TODAY: USPS raising stamp prices: Last chance to lock in Forever stamp rate ahead ...