Which class of mail provides the fastest delivery at a premium price?

Priority Mail Express is the class of mail that provides the fastest delivery option available through the United States Postal Service, and it comes at a premium price. This service guarantees overnight delivery to most addresses, making it the quickest way to send mail or packages. Priority Mail Express includes features like tracking and insurance, which add to its value for those needing urgent shipping.

In contrast, other classes of mail, such as First-Class Mail, while also offering relatively speedy service (with delivery typically within 1-3 business days), do not guarantee overnight delivery and therefore are not the fastest option. Priority Mail is faster than First-Class Mail but still does not match the speed of Priority Mail Express, as its delivery is generally within 1-3 business days without the overnight guarantee. Media Mail is designed for shipping educational materials at a lower cost and can take longer than the other classes mentioned, focusing primarily on budget over speed.