USPS Priority Mail is a 2-3 day express delivery product. USPS discounts from SpiderShip.com are available for USPS Priority Mail. Priority mail is separated into domestic delivery and international deliveries.
USPS Domestic Priority Mail
Domestic Priority Mail reaches 90% of the continental U.S. within 2 days. The USPS picks up packages with their own vehicles. They sort and organize them and send them by air on a FedEx plane. Then the USPS delivers them to the 
destination. Using FedEx planes but picking up and delivering with their own vehicles insures speed and quality of service.
There are two ways to ship USPS Priority Mail. You can choose your own packaging and send boxes that fit within the dimensional restrictions. Packages can be no larger than 108” of combined girth and length or weigh more than 70lbs. The other way to ship is through USPS Priority Mail Flat Rate boxes and a Fate rate envelope.
Priority Mail shines when compared to 2 day services from the other two major competitors. The cost savings is unquestionable. If you want to get your package to its destination quickly but do not want to pay express prices Priority mail is your best bet. Shipping starts at half a pound instead of one pound.
USPS Priority Mail is much quicker than UPS and FedEx ground products. It is also less expensive if you are shipping packages between 1 and 5 lbs. Shipments going to Hawaii and Alaska will be way less expensive than any ground products.
USPS Priority Mail Flat rate Boxes
The contract with FedEx for shipping is based on air space. USPS Priority Mail Flat Rate Boxes are designed to fit into that air space. The Post Office pays a flat rate for specific dimensions up to 70 lbs and passes the flat rates onto the consumer. That is how the genius idea of Priority Mail Flat Rate Boxes was born.
USPS Priority Mail Flat rate Envelopes Start at a very low price. If you are used to using an overnight serve and are looking to save money give these a try. Statistics show that they will reach 90% of the U.S. within 2 days. But they will also be delivered overnight to a specific area within your local region. Imagine paying less than $5 to overnight a document instead of $15 to $20.
USPS International Priority Mail
Priority International Mail is the most affordable international shipping option. Retail prices start as low as $11.45. The USPS also has its own customs offices in many other countries. While all the other small parcel services are in line with each other the Post Office has its own dedicated customs service. This privilege is extended to the federal government and increases speed of delivery.
