About USPS
The United States Postal Service is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states.
Tracking Code Patterns:
Examples of the available tracking # patterns:
9400 1000 0000 0000 0000 00
E000 000 000 US
9407 3000 0000 0000 00
9205 5000 0000 0000 00
9208 1000 0000 0000 00
9270 1000 0000 0000 00
EC 000 000 000 US
CP 000 000 000 US
LZ 000 000 000 US
Auto-Track USPS Shipments
Our Multi-Carrier Tracking API will auto-track your USPS shipments
USPS Post-Shipping Automation
Fully integrate USPS tracking into your WooCommerce or Shopify store admin
USPS Delivery Notifications
Send your customers automated USPS shipment status & delivery emails or SMS
USPS Tracking on Your Store
Direct your customers to track USPS shipments on a tracking page on your store