express mail vs priority mail express

express mail vs priority mail express compares two premium USPS services, both of which offer fast delivery but with different features. Express Mail is the predecessor of USPS Priority Mail Express, which now provides guaranteed overnight delivery to most U.S. locations, including PO Boxes. Priority Mail Express is the fastest service offered by USPS for domestic shipments, offering delivery within 1-2 days with a money-back guarantee if the package is not delivered on time. Express Mail, while still used in some contexts, is essentially a legacy name for this service. Priority Mail Express offers tracking and insurance up to $100, and for an additional fee, customers can add more coverage. It’s a good option for urgent documents and packages that require fast delivery, and it also includes delivery on Sundays and holidays at no extra cost.