Because of the faster speed, it’s more expensive than First Class Mail. Think of it as being similar to Amazon Prime’s 2-day shipping, but with flat rates on packages up to 70 lbs. Priority Mail is the USPS’s fastest shipping service.

Fourth Class Mail: Media Mail (CDs, vinyl records, DVDs, books, bound print media consisting of 8 or more pages.).Third Class Mail: Marketing mail, flyers, mailers, etc.Second Class Mail: periodicals, magazines, newspapers that are printed more than 4 times a year.The USPS has different classes available for its mail. First Class Mail is used to ship letters, thick envelopes, padded envelopes, and lightweight packages. What is USPS First Class Mail?ĭespite its name, First Class Mail isn’t USPS’s fast shipping service.

We know it can be confusing to determine which service is best for you, so here is our guide to learning which USPS service is best for you. Both servcies have their pros and cons, and the service you choose depend on many factors. When shipping with USPS, most shippers use First Class Mail or Priority Mail. Priority Mail – When to Use Each Service Posted by Shipping Tree on June 10, 2022

Usps priority mail flat rate boxes