USPS Priority Mail Express – International, Features, FAQ

USPS Priority Mail Express: United States Postal Service provides a fastest domestic service which delivers packages or mail items overnight with a money back guarantee. This service provides shipment to almost all U.S. addresses, including PO Boxes. If you’ve any important package or mail item to be delivered overnight then simply avail this service at $23.75 at Post Office locations and online. This service is available throughout the year(i.e. 365 Days); on Sundays and holidays delivery is available when postage is purchased through USPS. It is the service if you want your package to be delivered fast and on time.

Grab more information about USPS Priority Mail Express and its features, pricing, restrictions, and flat rate products from below.

What is USPS Priority Mail Express?

The USPS Priority Mail Express is the fastest service for domestic shipment and is available for most of the US addresses, including PO Boxes. It guarantees the delivery of the shipment overnight.It’s like going on vacation, You just plan a trip and there you are. Same is with the Priority Mail Express, if you want your package at the earliest then, you must go for this service. This service starts with $23.75 at Post Office locations and also online. The USPS Priority Mail Express also guarantees a money-back if not delivered on time.

You can ship your item up to 70 lbs without any extra charges. Flat Rate Envelopes are available at affordable pricing offers one rate to any of the states. No weighing and calculation of cost are done until 70lbs. If your shipment did not arrive on the requested destination on time and date then request a refund within 30 days of the mailing date.


  • Free Package Pickup service is available at your home or office.
  • It also includes insurance up to $100 with most of the shipments.
  • Price includes proof of delivery signature record(if it is requested at the time of purchase) and also the USPS tracking information.
  • Overnight scheduled delivery by 10.30am, and also available on Sunday and Holiday for many major markets but with some additional fee.

Note: Except for Priority Mail Express Flat Rate envelopes, Priority Mail Express prices may vary according to the weight and zone.


This service starts at $23.75 at Post Office locations and also online. The prices are normally based on the weight of mail item and zone, except for Priority Mail Express Flat Rate envelopes. You can easily calculate an expected price for domestic shipments by using the price calculator of USPS. Use the link shared below to calculate price now.



There are few restrictions on the domestic items that you can deliver. You might be having a question whether you can mail Beer? alcohol? Cigarettes? Fruits and vegetables?. Whether USPS will allow the shipment of your mail items or not? If you have these question, then it is recommended to check the list of prohibited and restricted items below. Also, note that all the prohibited domestic items are also prohibited from international shipments.


  • Maximum weight of the mail item should be under 70 lbs.
  • Flat Rate Envelope should be sealed properly within the normal folds.

Prohibited Domestic Items

  • Airbags
  • Ammunition
  • Explosives
  • Gasoline

USPS Priority Mail Express Flat Rate Envelope

Free Supplies Shipping Price Dimensions
Flat Rate Envelope $21.18 commercial base

$23.75 at Post Office (retail & online)

12 1/2″ x 9 1/2″
Legal Flat Rate Envelope $21.28 commercial base

$23.95 at Post Office (retail & online)

15″ x 9 1/2″
Padded Flat Rate Envelope $21.64 commercial base

$24.45 at Post Office (retail & online)

12 1/2″ x 9 1/2″

Priority Mail Express International

For fastest international shipments, USPS offers Priority mail express international service which provides services to more than 180 countries. Use this fast and affordable international service which do shipping in 3 to 5 business days, plus a money back guarantees for selected destinations. This service begins at $40.95 at Post Office locations and online. So, if you have any international mail item to be delivered early then use this service. There is no weighing or calculating needed. With Flat Rate, you pay one rate depending on the destination country.


  • There is a money back guarantee only for select destinations, not for all destinations.
  • This service delivers packages within 3 to 5 business days.
  • There is also a free Package Pickup service at your home or office
  • You can also track your packages through
  • There is an insurance of up to $100 for non-negotiable document reconstruction and up to $200 insurance for merchandise damage, loss, or missing contents.


This service begins at $40.95 at Post Office locations and online.  The pricing actually dependent on the weight and destination country. Use the link shared below to calculate expected shipping cost for international shipments.



There are few restrictions on the International items. Few items can not be shipped internationally such as Cigars, Medical devices, Lithium batteries, medical or drugs. Following are the prohibited items.

  • Aerosols
  • Nail Polish
  • Ammunition
  • Cigarettes
  • Air Bags
  • Alcoholic Beverages
  • Gasoline
  • Dry Ice
  • Explosives
  • Fresh Fruits and Vegetables
  • Perfumes (containing alcohol)
  • Poison

Priority Mail Express International Flat Rate Products

Free Supplies Shipping Price From Dimensions Weight Limit
Flat Rate Envelope $41.50 at Post Office (retail & online)
$39.45 commercial base
12 1/2″ x 9 1/2″ up to 4 lbs
Legal Flat Rate Envelope $41.50 at Post Office (retail & online)
$39.45 commercial base
15″ x 9 1/2″ up to 4 lbs
Padded Flat Rate Envelope $41.50 at Post Office (retail & online)
$39.45 commercial base
12 1/2″ x 9 1/2″ up to 4 lbs

USPS Priority Mail Express FAQ

Is Priority Mail Express Service Eligible for a Refund?

It may be eligible for a refund. To claim a refund, the send must visit a local Post Office with customer copy of the Priority Mail Express label and fill the PS Form 3533 completely within the 30 days from the date the item was mailed. Once verified, your refund will be paid by cash or a no-fee money order. Also, note that the refunds may not be considered if the delay was due to reasons that are beyond the control of the USPS.

How to track USPS priority mail express?

United States Postal Service assigns a unique number to each mail item or package that is shipped through USPS. This number is called USPS Tracking Number, use this number to track your mail item. Visit the official website of US Postal Service i.e. to track your priority express mail package. If you don’t know how to track through then follow these guidelines.

What is USPS priority mail express delivery time?

For domestic shipments, it normally takes a day, while for international shipment the time is 3 to 5 business days. Track your USPS package at to know the further details about your package expected arrival.

If you’ve nay question or query related to USPS Priority Mail Express, then use the comment section provided below. We will respond back at the earliest.


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