USPS Priority Mail Express

The fastest and easiest way to send USPS Priority Mail Express

Updated 12.3.2019

USPS Priority Mail Express is the United States Postal Service (USPS) overnight mailing service. It was created to offer overnight domestic shipping 365 days a year within the United States—with limited exceptions. 

To use Priority Mail Express, your package must weigh under 70lbs. You can send your packages in single shipments or on a larger commercial scale. Although our service focuses on documents, we also help with USPS Priority Express mail delivery and tracking. 

When using this service, you can choose between flat rate and retail pricing—based on the purpose of your shipments. Shipments typically arrive in 1-3 days, with most packages being delivered within 24 hours of the initial order. With Send Overnight Mail, we make sure that most physical documents are delivered the next day—so long as your files are uploaded before 11am.

USPS Priority Express offers prompt service and does not charge additional fees for rural, residential, or out-of-the-way deliveries. Send Overnight Mail helps you make the most out of the USPS service with just a few simple steps.

How to send USPS Priority Mail Express via

  1. First, create and save the documents that you'd like to send. Make sure to correctly format your files and include all of the necessary information. Double—even triple—check your documents before completing the process!
  2. Visit and upload the documents you need to send using USPS Priority Express mail. They will be delivered by the next day.Upload the letter or document you'd like to send
  3. Enter the address and name of the recipient(s). Be sure to include the name of the company if applicable.Enter the recipients address
  4. Next, you’ll need to enter the return address. This can be a business or personal address.Provide your return address
  5. Once you’ve confirmed, you’ll need to choose USPS Priority Express shipping by 11 am on the day before you’d like the documents delivered.
  6. To complete the process, simply confirm the details and complete the secure payment prompts. You’ll receive confirmation of the transaction.
  7. After shipping your package, you can monitor the delivery progress via your online Send Overnight Mail account or through the USPS Priority Express Tracking official site.

Who is USPS Priority Express for?

USPS Priority Express delivery is an excellent option for anyone who needs to send documents overnight. Attorneys, employers, real estate agents, and a large variety of professionals have taken advantage of this service to ensure their transactions are completed successfully.

Legal papers, contracts, and other time-sensitive materials can all be sent easily and efficiently. With USPS Priority Express you can rest assured that your documents will arrive on time!

Why use Send Overnight Mail for USPS Priority Express?

USPS Priority Express is available via the USPS website and through official shipment centers across the U.S. However, Send Overnight Mail allows you to complete the shipping process entirely online—without the hassle of a pickup arrangement or the need to print and apply labels yourself. We make the entire process easier and more accessible to folks who need to get documents sent quickly and efficiently. is the easiest and fastest way to send USPS Priority Mail Express. You can send USPS overnight mail online, right from your phone or laptop, with minimal effort, and without having to walk to a post office. 

How it works:

With, you can

  1. Send USPS Priority Mail Express online (this includes choosing colors vs Black and white, and single vs. double sided)
  2. See the delivery cost and speed before sending
  3. Get a USPS Tracking number
  4. Get USPS Priority Express delivery notifications in your email, and keep track of your mail along the way.
  5. Never step into a Post Office again.

USPS Priority Mail Express items will be delivered in a tracked and insured package that looks like this: USPS Priority Mail Express Envelope

How to track USPS Priority Mail & USPS Priority Mail Express

Looking for USPS Prority Mail Tracking? Head over to the USPS Tracking tool here. You can track up to 35 packages at a time. If you send your USPS Priority Mail via Mailform, we'll send you delivery notifications when complete, and provide you with a downloadable report of all your delivered mail, with tracking numbers and shipping and delivery dates.

Sending USPS overnight documents has never been easier, and with you can now do it online. Whether you're sending time sensitive documents, letters or forms, we make it easy peasy, right from the comfort of your home or office. If you have questions, comments or concerns, email us at More services are coming soon!