Priority Mail Flat Rate lets you ship domestic packages up to 70 lbs. Most online sellers shipping Priority Mail from home use Flat Rate to ship small, heavy packages and Commercial to ship large, lightweight packages. Is Priority Mail Flat Rate less expensive than Priority Mail Retail/Commercial? Priority Mail Express is more expensive than the other Priority types. Priority Mail Express is the only Priority shipping service to guarantee its delivery time, with one to two-day shipping or overnight shipping options available. Is Priority Mail shipping faster than Flat Rate shipping?ĭelivery times are the same for Priority Mail shipping and Priority Mail Flat Rate shipping, with both estimated to arrive in two to three business days. Priority Mail pricing and delivery time FAQs Read on to learn which Priority Mail service is right for your business, find answers to frequently asked questions and get tips for shipping Priority Mail from home.

In addition to Priority Mail Express, Priority Mail is divided into two more categories: Priority Mail Flat Rate and Priority Mail Retail/Commercial. Media Mail ®: 2 - 8 business day delivery of educational materials and media.USPS Retail Ground ®: 2 - 8 business day delivery of packages of any size/weight.First-Class Mail ®: 1 - 3 business day delivery of mail, small packages up to 13 oz.Priority Mail: 2 - 3 business day delivery of anything mailable up to 70 lbs.Priority Mail Express ®: 1 - 2 day or overnight delivery of anything mailable up to 70 lbs.The definition is right in the name: Of all the classes of shipping it offers, USPS ® prioritizes the delivery of its Priority Mail ® services:

Priority mail envelope