USPS to slow down First-Class delivery to help speed up Priority Mail

USPS test: We mailed 4 packages with GPS trackers to see how quickly they got there

USPS increases delivery time on first class mail

USPS slows first-class mail delivery starting in October

First-class packages may take longer to mail through USPS

USPS mail delivery times

Is first-class USPS delivery slower? We tested it to find out.

USPS adding one to two days onto first class delivery estimates

Postal Cuts to Slow Delivery of First-class Mail

HOW TO ADDRESS A PACKAGE

How USPS Sorts Mail

Understanding 1,2&3 Day USPS Priority Mail

So You Think You Can Be A Mail Carrier? | USPS to Conduct One-Day Hiring Blitz Across San Diego Coun

How To Ship USPS International Packages and Fill Out a Customs Form

Postal cuts to slow delivery of first-class mail

Good Question: How does the post office deliver mail?

First Class vs Priority Mail

Expect slower mail in some cases with new USPS change

USPS Click-N-Ship®

Complete EBAY Shipping Series: Episode 1: First Class Packages The 10 Things You Need To Know!