USPS  branded tracking experience
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USPS branded tracking experience

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USPS tracking API and webhooks
For developers

USPS tracking API and webhooks

USPS for developers to integrate USPS tracking functionality easily using
USPS tracking API

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About USPS

The United States Postal Service (USPS), as known as the U.S. Post Office or U.S. Mail Service is an autonomous executive branch agency of the federal government with the mandate to facilitate postal services in every part of the United States.

USPS Service Types

USPS provides a wide range of services, including:

  1. Mail & Shipping Services: includes all mail and shipping options for domestic delivery. Customers can choose from a variety of services such as First-Class Mail, Marketing Mail, Periodicals, Media Mail, Package Services, Priority Mail, and USPS Retail Ground.

  2. International Shipping Services: specialized services designed specifically for international shipping, including Global Express Guaranteed, Priority Mail Express International, Priority Mail International, First-Class Package International Service, and Airmail M-Bags. These services offer fast and reliable delivery to destinations around the world.

  3. Business Shipping Services: offers several services geared towards businesses, including Premium Forwarding Service, Every Door Direct Mail, PO Box and Street Addressing, and Click-N-Ship. These services enable businesses to manage their mailing and shipping needs more efficiently.

  4. Tracking Services: United States Postal Service tracking provides customers with real-time updates on the status of their packages, including information on when a package is shipped, delivered, and if there are any exceptions or delays during transit.

  5. Insurance & Extra Services: provides additional services that customers can purchase for added security and protection when sending items through the mail. These services include Certified Mail, Collect on Delivery (COD), Insured Mail, Registered Mail, Signature Confirmation, Adult Signature Required, Return Receipt, and Restricted Delivery.

These categories provide a comprehensive overview of the different types of services offered by USPS and help customers choose the most appropriate service based on their specific needs.

USPS Shipping Methods

USPS Mail & Shipping Services

USPS Mail & Shipping Services offer a range of mailing options to customers, depending on the specific needs of their shipment, including:

  1. First-Class Mail®: This service is ideal for sending lightweight envelopes, postcards, and packages weighing up to 15.99 ounces. It offers affordable pricing and fast delivery times ranging from 1-5 days.

  2. Priority Mail®: This service provides fast, reliable, and affordable delivery in 1-3 business days, depending on the destination. It is ideal for shipping packages up to 70 pounds with included insurance up to $100.

  3. USPS Retail Ground®: This service provides economical prices for shipping large and heavy packages. The delivery time ranges from 2-8 business days, depending on the destination.

  4. Priority Mail Express®: This service provides guaranteed overnight delivery across the United States with options for both retail and commercial pricing. It includes free tracking and up to $100 insurance coverage.

  5. Media Mail®: designed for shipping books, printed music, and other educational materials that weigh less than 70 pounds. It offers lower rates than other classes of mail, but delivery times can be longer.

USPS International Shipping Services

USPS International Mail & Shipping Services provide customers with a range of options to meet their international shipping needs, including:

  • Fastest Delivery Speed Options: This service is designed for urgent items that must arrive in a few days with a guaranteed date-certain delivery and money-back guarantee.

    • Global Express Guaranteed® (GXG®): This service is designed for urgent items that must arrive in a few days with a guaranteed date-certain delivery and money-back guarantee. The service is called Global Express Guaranteed (GXG), with prices starting from $71.10. The delivery time ranges from 1-3 business days, and the maximum weight allowed is 70 lbs. The service includes tracking to all destinations and up to $100 insurance coverage. Additional insurance can be purchased up to $2,499.

    • Priority Mail Express International®: This service is ideal for sending important items that need to arrive in under a week. It includes a money-back guaranteed date-certain delivery for select locations, with prices starting from $54.75. The delivery time ranges from 3-5 business days, and the maximum weight allowed depends on whether a flat rate envelope or mailing box is used. The service also includes USPS Tracking and up to $200 insurance coverage for merchandise (depending on contents). Additional insurance can be purchased up to $5,000.

  • Affordable Options: These services offer value-priced shipping with options for flat rate pricing or pricing based on weight.

    • Priority Mail International®: This service is designed for packages weighing over 4 lbs, with delivery times ranging from 6-10 business days. Prices start from $30.35, and the maximum weight allowed depends on whether a flat rate envelope, flat rate box, or pricing by weight is selected. The service includes USPS Tracking and up to $200 insurance coverage for merchandise (depending on contents).

    • First-Class Package International Service®: This service is for packages or large envelopes over 1 lb that contain items worth less than $400 and weigh less than 4 lbs. Prices start from $15.75, and the delivery time varies by destination. The service includes E-USPS DELCON INTL® service to select destinations only, but tracking is not available. Insurance coverage is not included.

  • Best for Documents or Printed Materials Only: These services are best suited for envelopes of only documents or a large sack of books or other printed material.

    • First-Class Mail International®: This service is designed for envelopes of documents weighing under 1 lb, with prices starting from $2.90. The delivery time varies by destination, and the maximum weight allowed is up to 1 lb (documents only). Tracking and insurance coverage are not available.

    • Airmail M-Bags®: This service is ideal for international students in the U.S. who need to send lots of books home. Prices start from $55.00, and the delivery time varies by destination. The maximum weight allowed is up to 66 lbs (printed material only), with USPS Tracking included. Insurance coverage is not available.

USPS Business Shipping Services

USPS does offer business shipping services for small to large volume mailers. Some of the postage options available include Click-N-Ship, Click-N-Ship Business Pro, and the Business Customer Gateway.

  • Click-N-Ship® allows users to pay for postage and print shipping labels online, with options to pay using a credit card, Visa Checkout, or PayPal. Users can also ship domestically or internationally and create batch shipments of up to 20 identical packages. Additionally, customers can earn USPS Loyalty Program credits when they purchase Priority Mail and Priority Mail Express labels.

  • Click-N-Ship Business Pro™ is another option that allows users to download desktop software for shipments of at least 10 pieces or more. This service allows you to pay postage via electronic manifest files, ship domestically or internationally, and manage your shipping with integration and reporting features.

  • The Business Customer Gateway serves as a hub for managing volume mailing and shipping for businesses of all sizes. With this service, users can access online tools for business mailers, customer package return services, and promotions and incentives.

USPS Tracking Number

USPS tracking numbers typically consist of 22 digits or characters and may include letters and numbers. The tracking number is usually provided by the sender and can be used to track the package's status throughout its journey to the recipient. Customers can enter the tracking number on the USPS website, mobile app, or by calling USPS customer service to receive updates on the package's delivery status.

Here are some examples of USPS tracking number formats:

  • USPS Tracking Number: 9400 1000 0000 0000 0000 00
  • Priority Mail Tracking Number: 9205 5000 0000 0000 0000 00
  • Certified Mail Tracking Number: 9407 3000 0000 0000 0000 00
  • Collect On Delivery Hold For Pickup Tracking Number: 9303 3000 0000 0000 0000 00
  • Global Express Guaranteed Tracking Number: 82 000 000 00
  • Priority Mail Express International Tracking Number: EC 000 000 000 US
  • Priority Mail Express Tracking Number: 9270 1000 0000 0000 0000 00 or EA 000 000 000 US
  • Priority Mail International Tracking Number: CP 000 000 000 US
  • Registered Mail Tracking Number: 9208 8000 0000 0000 0000 00
  • Signature Confirmation Tracking Number: 9202 1000 0000 0000 0000 00

Contact USPS

Contact USPS Customer Services (U.S. Only)

Hours of Operation

  • Monday – Friday 8 AM – 8:30 PM ET
  • Saturday 8 AM – 6 PM ET

Contact USPS Technical Support

Hours of Operation

  • Monday – Friday 8 AM – 8:30 PM ET
  • Saturday 8 AM – 6 PM ET

Contact Domestic & International USPS Tracking

Hours of Operation

  • Monday – Friday 8 AM – 8:30 PM ET
  • Saturday 8 AM – 6 PM ET

Frequently Asked Questions

See what our customers are saying about our shipment tracking

Aurelie S.
Aurelie S. - Gestionnaire de comptes in Octave Assurances Inc
Amazing Service !! They are quick to respond, patient, SUPER HELPFUL They are very welcoming and always follow up to make sure we are ok with our process ! Thank you
Kartik L.
Kartik L. - SDL
Easy and Powerful! The platform was easy to use and I loved it helped integrate several tracking information into one singular place and notified me of statuses and delays! Its user friendly and I loved it let me customize my page to an extent!
Nitin R.
Nitin R. - Technical Specialist
Great Shipping App for Onsite Shipments. Fast shipping, multiple shipping partner options, user-friendly site, fast pickup as well from Marchant, customer support is good. Can ship inter-country
Charles C.
Charles C. - IT Specialist
Accurate And Easy Shipment Tracking. The best aspect for me is the way shipments can be easily tracked. The interface is simple, nicely designed and easy to use. Another thing I like is the availability of mobile apps which enable easy scanning of bar codes and receiving push notifications. I also like that the service is quite affordable.
Verified User
Verified User in Hospital & Health Care
Good order tracking solution with global coverage. Customer Service Flexible Pricing Account Management - Self Service Easy to integrate Simple UI Customizability of APIs Actionable insights and analytics Response for issues - excellent

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