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.
USPS Tracking number Instructions:
The most common tracking number format is 22 digits, or a combination of 13 alphabetic and numeric characters, usually starting with 2 alphabets, following by 9 digits, and ending by "US" (e.g. EA 999 999 999 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