Priority Tracking

In 2021, the United States Postal Service’s (USPS) Priority Mail service generated over $14.3 billion in shipping revenue. This service comprised most of USPS’ total income for that year, outperforming First-Class and Parcel Select services.

This figure shows the significant demand for Priority Mail services in the United States. Whether you are a casual customer or business owner, consider using Priority Mail if you need a fast delivery service and a way to track your shipment.

How do you track your domestic and international Priority Mail packages? How does USPS Tracking work? Do tracking numbers have different formats?

This article discusses these issues and tells you how to find the tracking number on your package. This article also explains the meanings of the different tracking status messages and why such statuses do not update sometimes.

When sending mail using USPS Priority Mail or Priority Mail Express, use FindPostOffice.org’s online search tool to locate a post office near you. You can also find post offices by city, state, or ZIP code to help narrow your search.

What Is USPS Tracking?

USPS Tracking checks the delivery status of your mail, packages, and consignments sent through the United States Postal Service (USPS). Upon entering your item’s tracking reference number into the USPS website’s tracking page, you can see your parcel’s latest status.

The tracking information usually has two parts:

• USPS package status: Shows your package’s status summary, such as “In transit” or “Delivered,” and updates tracking information within 24 to 48 hours.
• Tracking history: Provides your parcel’s current status alongside other historical data.

What Is Priority Tracking?

When you ship packages using USPS Priority Mail, your mail pieces will include tracking information. This Priority Mail tracking feature enables you and your recipient to monitor your shipment’s movements through the USPS system to the item’s destination.

How Long Does Priority Mail Take?

Priority Mail is a USPS service that delivers your packages in one to three business days. This service includes USPS Tracking, free package pickup at your home or office, and up to $100 in insurance for most shipments.

U.S. Mail Service Priority Mail Domestic Tracking

USPS, or U.S. Mail service, provides end-to-end item tracking for most domestic mail products large enough and addressed to domestic locations.

Domestic tracking information for Priority Mail is stored for 120 days, allowing you to review your shipping history for that period.

U.S. Mail Service Priority Mail International Tracking

The USPS Priority Mail International service provides an economical and reliable way to ship your parcel to more than 180 countries, including Mexico, Australia, and Canada. This service offers a tracking feature and lets you request a free package pickup.

U.S. Mail Service Priority International Delivery Times

USPS Priority Mail International boasts a fast delivery time of 6 to 10 business days for most major markets. However, the actual number of days will depend on the origin and destination and should consider delays due to customs processing.

U.S. Mail Service Priority Mail Express International Tracking

Priority Mail Express International is an even faster USPS service that delivers to about 180 countries in three to five business days.

This service also includes USPS Tracking. However, customers shipping to select destinations may be ineligible to access this feature.

Who Delivers USPS Priority?

When you send an item through Priority Mail, USPS can deliver it to your post office box (P.O. box) or through a mail carrier.

USPS will not charge you extra for fuel, Saturday delivery, or residential or rural delivery when you use Priority Mail.

Does Priority Mail Automatically Come With Tracking?

Yes, Priority Mail readily comes with USPS Tracking. However, this feature is not included when you use prepaid Forever Priority Mail Flat Rate products.

How Does USPS Tracking Work?

When you send your package, USPS or one of the company’s shipping partners scans your item’s label several times during the mailstream. Tracking starts when you or a USPS shipping partner electronically notifies the Postal Service about the expected package.

Tracking continues with USPS receiving the package during transit and ends when the recipient or agent receives or picks up the item.

You can access your package’s tracking information throughout the delivery process by entering the item’s tracking number into the USPS Tracking page’s search box.

USPS Tracking Retail Label

When looking for the USPS Tracking number on your package, you should see a barcode with a series of numbers under this code. This number is your tracking number.

Label 400, USPS Tracking Label, Front

As of January 2023, USPS replaced the Tracking Label 400 with Label 888, an internal-only version available for commercial customers only. All post offices no longer offer this shipping label and have removed it from retail lobbies.

How to Track U.S. Mail Service Package

To track your USPS package, go to USPS.com and visit the USPS Tracking page. Next, enter the tracking number in the search box and click “Track.”

“How Do I Track Priority Mail?”

When monitoring your Priority Mail shipment, you can track it using the same process as tracking a USPS package described above. You can also track your Priority Mail parcel using a third-party site that allows you to track USPS shipments.

What Are USPS Tracking Numbers and Formats?

USPS implements different formats for tracking numbers, depending on the service. These numbers provide a convenient way to monitor your shipments’ progress during transit.

The following sections describe these number formats.

USPS Tracking Number Rules

A USPS tracking number is a combination of numbers and letters assigned to your package when you drop off a package at a USPS post office. You can use this number to monitor your package’s movement from origin to destination.

USPS Service Label Formats

The tracking number formats for the different USPS services are listed in the following sections.

Priority Mail

The tracking number for USPS Priority Mail has 22 digits and appears in the following format:

9205 5000 0000 0000 0000 00

Certified Mail

If you send Certified Mail through USPS, the Postal Service will assign a 22-digit tracking number to your item. The format for this number is as follows:

9407 3000 0000 0000 0000 00

Collect on Delivery

For Collect on Delivery (COD) services, the tracking number uses 22 digits that appear in this format:

9303 3000 0000 0000 0000 00

Global Express Guaranteed

The tracking number for Global Express Guaranteed (GXG) services has a 10-digit format and appears as follows:

82 000 000 00

Priority Mail Express International

This service’s tracking number appears as a 13-digit alphanumeric number that combines letters and numbers. The Priority Mail Express International tracking number takes this format:

EC 000 000 000 US

Priority Mail Express

This service has two tracking number formats appearing as a 22-digit reference number or a 13-digit alphanumeric string with the following details:

9270 1000 0000 0000 0000 00

EA 000 000 000 US

Priority Mail International

The tracking number for Priority Mail International packages has a 13-digit alphanumeric number formatted as follows:

CP 000 000 000 US

Registered Mail

This USPS service uses a 22-digit tracking number with the following format:

9208 8000 0000 0000 0000 00

Signature Confirmation

If you purchase the Signature Confirmation service, USPS will give you a 22-digit tracking number that appears as follows:

9202 1000 0000 0000 0000 00

“How to Find My Tracking Number”

Your shipment’s tracking number is necessary, providing convenient and real-time tracking. To know where to find this number, check the list below.

Your USPS Tracking Number Can Be Found in the Following Places

When sending an item through USPS, the company will usually place the tracking number in the following areas:

• The shipping receipt from the post office
• The sales receipt when you buy insurance at the post office
• The confirmation email when you ship from USPS.com
• The confirmation email you receive from an online retailer
• The USPS Tracking label’s bottom peel-off portion

“How Do I Access Tracking Information?”

Suppose you want to check your shipment’s tracking information to know your package’s status. Whether you are the recipient or shipper, you can track the delivery status through the following options:

• Accessing USPS.com’s tracking page: Enter the tracking number in the USPS Tracking service page’s search box on the USPS website.
• Using third-party web tracking tools: Input the tracking number on third-party websites like USPS-Track.US. These sites are authorized by USPS to provide fast and safe package tracking.
• Using USPS Text Tracking: Text your tracking number to 2USPS (28777). Standard messaging charges can apply.
• Accessing USPS smartphone apps: Download the USPS Mobile app for Android or iPhone.
• Calling the USPS phone number: Contact USPS’ toll-free phone number at 1-800-ASK-USPS (1-800-275-8777) or the teletypewriter/telecommunications machine for deaf people (TTY/TDD) at 1-800-877-8339.

How to Parcel Track With USPS Text Tracking

To track packages through Text Tracking, do any of the following actions using your phone:

• Text your tracking number as the message’s content to 28777. The text reply should contain your item’s latest tracking information.
• Text your tracking number and a keyword to 28777. Keywords inform USPS of the specific information you need, such as whether or not the courier has attempted delivery.

Different USPS Status Meanings

As you scroll through your shipment’s tracking information, you will likely encounter different messages summarizing your item’s delivery status. The following sections discuss the meaning of these messages.

What “In Transit” Means in the U.S. Mail Service

Your shipment is “In Transit” when the carrier has picked up and scanned your package and sent it en route to the recipient.

A shipment may be delayed if it is in transit for an extended period. Some reasons for this delay include unfavorable weather, adverse road conditions, or poor location deliverability.

What “Out for Delivery” Means in the U.S. Mail Service

This status means your package has left the courier’s facility and is heading to your recipient’s delivery address. This status should change to “Delivered” after the postal worker delivers the item to your recipient.

What “Delivered” Means in the U.S. Mail Service

If you are the mailer, the “Delivered” status indicates the courier has delivered your package to your recipient. After the item gets dropped off, the tracking information should show the delivery date and time.

What Does “Return to Sender” Mean?

This status means the courier is returning the package to the shipper. If you had sent the item, you may incur duties and taxes for the return.

Depending on the fees, you may dispose of the package at the destination country and send another one in place of the item.

“Inbound Out of Customs” Meaning

Getting this status means U.S. Customs has released your package, which should be on its way to your recipient.

If this status shows “Outbound” instead, your package has passed customs inspection and is heading to the destination country.

What Does Customs Do?

When international mail enters the United States, it passes through customs through one of five International Service Centers (ISC) in New York, Chicago, Miami, San Francisco, and Los Angeles.

ISCs dispatch and distribute international mail from designated service areas to gateway exchange offices or specific foreign countries.

Does the Customs Clearance Process Work?

As international mail arrives at an airport, ground handlers unload the receptacles containing mail and packages and take those items to the ISC. Afterward, USPS employees monitor and verify the status of these mail receptacles and make reports.

You can use these documents to instantly determine information about the mail, including when it was sent, scanned, and assigned to a specific flight from the origin country.

Other Tracking Statuses

Some status messages that may seem uncommon can appear when you check your package’s tracking information. Examples of these statuses include the following:

• Damaged in transit: The package got damaged during delivery. You can file a claim to receive compensation.
• Uncontrollable customs delay: The international package is held up at customs for some reason, such as having the recipient pay outstanding taxes or duties.
• Missed “In Transit” pickup scan: The internationally routed package remains stuck “In Transit” for an extended period and then suddenly updates to “Delivered.”

“My Package Shipped by U.S. Mail Service Shows No Tracking Information”

It is normal for mail pieces shipped through USPS to have little or no tracking information. Some USPS services, such as First-Class Mail, do not include the tracking feature and instead have delivery confirmation.

With delivery confirmation, such as USPS’ Proof of Delivery service, you receive an email letter containing the following details:

• Your shipment’s delivery information
• Recipient’s name
• Tracking number
• Image of the recipient’s signature
• Printed name and address
• Delivery location attribute, such as the porch or front door
• Extra services
• Product of mail
• Package weight

U.S. Mail Service Tracking Not Updating

Although USPS Tracking usually works properly, there may be instances when the tracking information does not update. Some of the reasons for this situation are discussed in the following sections.

What Are the Reasons Behind Tracking Not Updating?

If your package’s tracking information is not updating, a few reasons for this circumstance can be any of the following:

• Package barcode not scanned
• Bad weather conditions
• Package not scanned at intermediary stops due to unavoidable circumstances
• Unscannable or broken barcode
• Delay on the part of the carrier

“I’ve Received My Packages, but U.S. Mail Service Tracking Is Still Not Updating”

It is possible to receive your package without its tracking information updating, especially during the holidays when there is a package delivery rush. USPS can skip scanning to handle the increased demand in these situations.

Therefore, when USPS lags, it may forego scanning to help move the packages quicker.

U.S. Mail Service First-Class Mail International Tracking

Tracking for USPS First-Class Mail International (FCMI) is unavailable. However, FCMI is the most affordable USPS service to send mail, postcards, and large envelopes (flats) to more than 180 countries.

This service lets you send letters up to 3.5 ounces (oz) and flats up to 15.994oz.

U.S. Ground Mail Tracking

USPS Ground Advantage is an excellent choice for shipping packages up to 70 pounds (lbs) for a low price and an expected delivery of two to five business days. This service has tracking and up to $100 in insurance included.

What Is U.S. Mail Service First Class Package International?

First-Class Package International Service (FCPIS) lets you ship packages up to 4lbs (64oz) and worth up to $400 worldwide. Some destination countries may have other restrictions, but delivery confirmation is available in select countries. Retail prices start at $15.75 as of 2023.

How Long Does First-Class Mail Take?

USPS First-Class Mail is an easy and affordable way to send envelopes and postcards to your recipient in one to five days. You can use Forever stamps when using First-Class Mail. As of 2023, a 1oz Forever stamp costs $0.66 and does not expire, even if First-Class postage increases.

U.S. Mail Service First-Class Tracking

As mentioned, First-Class Mail does not have a tracking feature. Instead, you can use delivery confirmation, such as Certified Mail, for this service.

If you are the sender, Certified Mail provides you with a mailing receipt confirming that the courier has sent your item.

U.S. Mail Service International Tracking

Some international mailing services include USPS Tracking. These services are as follows:

• Global Express Guaranteed
• Priority Mail Express International
• Priority Mail International (except for small flat-rate boxes and flat-rate envelopes)
• Airmail M-Bags

Although these services have tracking, some destinations may have limited access to this feature. Contact USPS for assistance if you need information about your international mail.

How Long Does It Take for International First-Class Mail?

The time it takes for your FCMI shipment to arrive at your recipient varies by destination.

Despite this unpredictable delivery speed, FCMI remains a cheap option to send mail internationally, starting at $3.

What Is U.S. Mail Service Informed Delivery?

USPS Informed Delivery allows you to preview and receive notifications about your mail and packages scheduled to arrive soon.

The previews consist of grayscale images of your incoming letter-sized mail. Informed Delivery also lets you track and manage packages from one convenient place.

U.S. Mail Service Priority Mail International Standard and Express Service

USPS Priority Mail International allows you to send packages over 4lbs to your destination in 6 to 10 business days. Meanwhile, Priority Mail Express International delivers your mail in three to five days with a money-back guarantee.

Both services have USPS Tracking, are priced by weight up to 70lbs, and have insurance up to $100 for nonnegotiable documents or $200 for merchandise.

U.S. Mail Service Global Express Guaranteed

GXG is USPS’ fastest international shipping option that lets you send items up to 70lbs to about 180 countries in one to three days. Although GXG is a USPS service, Federal Express (FedEx) provides international transport and delivery.

As of 2023, this service’s price starts at $71.10 and comes with a money-back guarantee.

What Is Priority Mail Express Service?

Priority Mail Express allows you to ship items guaranteed to arrive the next day or within two days by 6:00 PM to most PO boxes and U.S. addresses.

This service includes USPS Tracking, with most shipments eligible for insurance up to $100.

U.S. Mail Service Business Solutions

If you have a business, USPS Business Solutions can assist you with your daily small and medium business needs, which include the following services:

• Marketing campaigns
• Every Door Direct Mail or EDDM (targeted advertising for small businesses in the community)
• Shipping best practices
• Supply ordering
• Package pickups and drop-offs
• Pricing calculator
• Shipping solutions like Click-N-Ship (an application for creating postage labels online)

U.S. Mail Service Parcel Select Ground

This USPS mail class offers a low-cost ground delivery service for heavy or oversized packages up to 70lbs.

If you are an online postage customer, you can use this service with no minimum package thresholds. If you do not use online postage, you must ship 50 pieces or 50lbs of items in one mailing.

U.S. Mail Service Parcel Select Ground Tracking

Parcel Select Ground comes with USPS Tracking at no extra cost and does not include residential, fuel, or Saturday surcharges. You can use this service to ship parcels to every U.S. address, including military addresses and P.O. boxes.

U.S. Mail Service Expected Delivery Window

While checking your package’s status, you may see a message regarding an expected delivery window, a two-hour time slot when you can expect your parcel to arrive.

Although USPS does not guarantee delivery within that period, your recipient may still receive the item by the day’s end.

U.S. Mail Service Parcel Select Delivery Time

USPS can deliver your Parcel Select shipment in two to eight days. Although this service offers low rates for shipping large packages, the cost to send your item depends on its weight and dimensions and the shipping distance.

U.S. Mail Service Delivery Hours

USPS strives to deliver all shipments by 5:00 PM, local time, from Monday to Saturday. However, USPS does not guarantee delivery times as mail volume can fluctuate daily. Also, unusual circumstances like traffic, severe weather, and carrier route changes can cause further delays.

U.S. Mail Service Sunday and Saturday Delivery Hours

Some USPS services can deliver on weekends or holidays. However, the delivery hours can vary depending on the post office location. The following sections discuss the services offering Saturday and Sunday deliveries.

Does U.S. Mail Service Deliver on Saturdays?

USPS can deliver on Saturdays, depending on the shipping service you choose. For example, Priority Mail and Priority Mail Express have Saturday delivery. However, other services like Retail Ground, First-Class Mail, and Media Mail do not specify deliveries on that day.

Does U.S. Mail Service Deliver on Sundays?

USPS offers Sunday and holiday deliveries through Priority Mail Express in many major markets for an additional fee. Contact your local post office to determine if Sunday delivery is available.

U.S. Mail Service Delayed Mail and Packages

Before considering a USPS shipment late, check the different shipping services’ mail delivery standards. Use the following standards as a reference to determine whether a delivery is late or not:

Service	Delivery standard	When to contact customer service
Priority Mail	One, two, or three business days	Five or more days after the mailing date
Priority Mail Express	One to two calendar days	6:00 PM, local time, on the guaranteed delivery date
First-Class Mail	One to five business days	Five or more days after the mailing date
USPS Ground Advantage	Two to five business days	Five or more days after the mailing date
Parcel Select	Two to eight business days	14 or more days after the mailing date
Marketing Mail	3 to 10 business days	14 or more days after the mailing date

U.S. Mail Service Package Not Moving for a Week, a Month, or Stopped

Sometimes, your package’s tracking information will display an “In Transit” status but not update for an extended period, making the delivery appear to have stopped. Some reasons for this occurrence are as follows:

• The item is still in the plane, train, or vehicle.
• The package has been offloaded but has not yet been processed.
• The barcode for scanning is damaged during transit.
• The item is stuck in a facility pileup.
• The transport vehicle broke down.

Does USPS Have a Live Chat?

USPS does not have a live chat feature on its official website. However, you can contact customer support through the following:

• By email using the customer service online form
• By calling 1-800-ASK-USPS

How to Talk to a Real Person in USPS Customer Service

Suppose you encounter issues with your USPS shipment or delivery tracking. One way to resolve the problem is by talking to a USPS representative. You can speak to an actual customer service agent through the methods detailed in the following sections.

USPS Customer Care Service or Contacts

Aside from calling the toll-free USPS customer care phone number at 1-800-ASK-USPS, consider the following numbers for other needs:

• Technical support: 1-800-344-7779 
• Domestic and international tracking: 1-800-222-1811
• Stamps and postal store orders: 1-844-737-7826
• Free shipping supplies: 1-800-610-8734

U.S. Mail Tracking Official Website

For all your USPS tracking and shipping needs, visit the Postal Service’s official website at USPS.com. You can conveniently access the tracking search box on the homepage to track your shipment immediately.

USPS Working Hours and Locations

With USPS operating more than 31,000 post offices across the U.S., working hours can vary depending on the location.

For instance, the Times Square Post Office in New York operates from 10:00 AM to 5:30 PM, Monday through Friday. Meanwhile, the Port Authority High Line Post Office operates weekdays from 10:30 AM to 6:00 PM. Both locations are closed on Saturdays and Sundays.

USPS Shipment Tracking Management

One of the ways to help you manage shipment tracking is by signing up for a USPS account, whether for personal or business reasons, and getting Informed Delivery.

This service lets you preview mail images and manage incoming packages on one dashboard without needing to enter tracking numbers. USPS Informed Delivery also enables you to sign up for email or text notifications, request redelivery, specify delivery instructions, and schedule alerts.

Multi-Language Support

Aside from displaying the USPS website in English, the Postal Service also offers Spanish and Simplified Chinese on the site to provide multi-language support.

To change the website’s default language, go to USPS.com and select the preferred language at the top of the page.

About U.S. Mail Service: Who Is USPS?

USPS is the nation’s only delivery service that can reach every U.S. address, comprising 160 million residences, businesses, and P.O. boxes. Instead of receiving tax dollars to operate, the Postal Service relies primarily on selling postage, services, and products to fund its operations.

FAQs

1. Where is my U.S. Mail Service package?

You can find your USPS package’s location or delivery status by entering your item’s tracking number in the USPS website’s tracking search bar.

2. When will my letter carrier or mail arrive?

To determine when your letter will arrive at its destination, check the delivery standard of the mail class you used to ship your package. For example, Priority Mail should arrive in one to three business days.

3. How do I successfully file an insurance claim with USPS?

To file an insurance claim successfully, check the required filing period of the mailing service you used to ship your package. For example, a Priority Mail Express claim should be filed between 7 and 60 days after mailing.

Next, gather the necessary documents, including evidence documents, supporting your claim. Lastly, file your claim online at USPS.com or by mail.

4. What type of mail requires a signature?

If you are the shipper, you can require Signature Confirmation for the following mail services:

• USPS Ground Advantage
• Priority Mail service items
• Parcel Select
• Package services

5. How can I leave delivery instructions?

To set up delivery instructions for your shipment, follow these steps:

• Click “Delivery Instructions” next to your shipment tracking number.
• Log in to your USPS.com account or sign up if you do not have one yet.
• Follow the prompts to check your address’ eligibility and specify the delivery instructions.

6. How many times will USPS attempt delivery?

Suppose you are the recipient and you do not receive the package on the first delivery attempt. USPS will attempt redelivery once.

If you miss the second delivery, USPS will notify you, and you can schedule a redelivery through the Postal Service’s website or by calling customer service.

7. Can I pick up my mail before it gets delivered?

Yes, you can pick up your item early by requesting USPS to hold it at the post office. You can request pickup by updating the delivery instructions, provided that:

• Your package has a tracking number.
• USPS is handling your package before delivery.
• Your parcel is not already out for delivery.

8. Does USPS ship on Sunday?

Some USPS services deliver on Sundays or holidays. For example, USPS can deliver Priority Mail Express items on a Sunday for an additional fee.

9. What’s the difference between Certified and Registered Mail?

The difference between these services is that USPS Certified Mail provides a tracking number, proof of receipt, and a mailing receipt. You can use Certified Mail when sending legal documents and other mail pieces requiring proof of delivery.

On the other hand, USPS Registered Mail provides Certified Mail services and added protection for irreplaceable or high-value items for a higher fee.

10. How do you get your package with U.S. Mail Service delivered?

When shipping with USPS, the process usually starts when you bring your package to the local post office or blue collection box.

If you are a private seller or small business, you can do this step once or twice weekly. Larger companies such as eBay or Amazon can do so daily.

A postal worker transports your package and other shipments on a truck and takes them to a mail sorting facility. Here, machines automatically sort packages by size, shape, and destination.

Afterward, the courier delivers your shipment to the correct location by truck and brings the item to your mailbox or doorstep via a mail carrier.

11. What can I do if my package hasn’t been delivered?

Check your package’s mail class delivery standard and the recommended time to contact USPS. For example, if your Priority Mail shipment does not arrive in one to three business days, call USPS five days after the mailing date.

12. U.S. Mail Service package lost or stolen: what should I do?

If your USPS shipment goes missing, check if the service you paid for has insurance. You can file a claim with USPS if your item has coverage. If the Postal Service approves your claim, the company will send you a check.

Another method is to file a missing mail search request using your USPS account. You can also call USPS for assistance at 1-800-ASK-USPS.

13. What shipping options do I have for international delivery?

You can send mail internationally through the following USPS services:

• Priority Mail International (delivers in 6 to 10 business days)
• Global Express Guaranteed (delivers in one to three business days)
• First-Class Package International Service (arrival depends on destination)
• Priority Mail Express International (delivers in three to five business days)
• First-Class Mail International (arrival depends on destination)
• Airmail M-Bags (arrival depends on destination)

14. How does the U.S. Mail Service premium tracking work?

USPS Tracking Plus, the Postal Service’s premium tracking service, extends your package’s tracking history access on USPS.com for a small fee from an additional 6 months up to 10 years.

You can also request a Tracking Plus statement via email anytime in that extended period.

References

1. United States Postal Service’s shipping and packages revenue from FY 2016 to FY 2021, by service
   https://www.statista.com/statistics/943318/usps-shipping-packages-revenue-service/
2. Priority Mail
   https://www.usps.com/ship/priority-mail.htm
3. USPS Tracking® – The Basics
   https://faq.usps.com/s/article/USPS-Tracking-The-Basics
4. Priority Mail International
   https://www.usps.com/international/priority-mail-international.htm
5. Service update
   https://link.usps.com/2023/01/17/service-update-3/
6. USPS Tracking®
   https://tools.usps.com/go/TrackConfirmAction_input
7. USPS Text Tracking™ FAQs
   https://www.usps.com/text-tracking/welcome.htm
8. Operations
   https://about.usps.com/strategic-planning/cs09/CSPO_09_046.htm
9. Mail & Shipping Services
   https://www.usps.com/ship/mail-shipping-services.htm
10. What is Proof of Delivery?
    https://faq.usps.com/s/article/What-is-Proof-of-Delivery
11. First-Class Mail International
    https://www.usps.com/international/first-class-mail-international.htm
12. First-Class Package International Service
    https://www.usps.com/international/first-class-package-international-service.htm
13. First-Class Mail
    https://www.usps.com/ship/first-class-mail.htm
14. Certified Mail® – The Basics
    https://faq.usps.com/s/article/Certified-Mail-The-Basics
15. International Mail & Shipping Services
    https://www.usps.com/international/mail-shipping-services.htm
16. Informed Delivery by USPS
    https://www.usps.com/manage/informed-delivery.htm
17. Priority Mail Express
    https://www.usps.com/ship/priority-mail-express.htm
18. Business Solutions with USPS® – The Basics
    https://faq.usps.com/s/article/Business-Solutions-with-USPS-The-Basics
19. Parcel Select®
    https://faq.usps.com/s/article/Parcel-Select
20. Delayed mail and packages?
    https://faq.usps.com/s/article/Delayed-Mail-and-Packages
21. Contact Us
    https://www.usps.com/help/contact-us.htm
22. Size and Scope
    https://facts.usps.com/size-and-scope/
23. Receive Mail & Packages
    https://www.usps.com/manage/
24. The U.S. Postal Service Speaks Your Language
    https://about.usps.com/news/national-releases/2012/pr12_115.htm
25. About the United States Postal Service
    https://about.usps.com/who/profile/
26. File a USPS Claim: Domestic
    https://www.usps.com/help/claims.htm
27. What is Signature Confirmation™?
    https://faq.usps.com/s/article/What-is-Signature-Confirmation
28. USPS Delivery Instructions™ – The Basics
    https://faq.usps.com/s/article/USPS-Delivery-Instructions-The-Basics