Everything You Need to Know About USPS Priority Mail Shipping
4 months ago, Sat, Sep 30, 2017, 07:38:40
Using Priority Mail Flat Rate packages designed by USPS or your own boxes, you can ship items across the country. Options available for USPS Priority Mail Shipping. Right off the bat, USPS priority mail shipping rate options come in a variety of four choices: flat rate packages (shipping boxes and envelopes) weight rates, dimensional rates, and regional rate boxes.