
Flat Rate Shipping, as the name suggests, offer a fixed and flat rate for all shipments, irrespective of their size or weight. The weight and destination of the package is not considered (20 pounds weight limit for international priority mail package).Shipping methods have their own advantages and disadvantages. They can be used to mail both domestic and international mail. Priority mail flat rate envelopes and boxes as outlined above come in various sizes and uses.

The cost is the same regardless of the weight and destination. Priority mail is the postal service's 2-3 business day delivery service to most US cities and 6-10 business days for Global. In this article we are going to identify what priority shipping is, discuss the different kinds of these envelopes and boxes and their corresponding prices. They even came up with a awesome tv promotion - If it fits it ships for both domestic and international priority mails.

One of the USPS's advertising methodologies to compete with civilian package shippers is the use of flat rate boxes.
