US government owned postal service for delivery within USA.
https://usps.com
Shipping Providers
Get access to data on 555,335 websites that are USPS Customers. We know of 215,877 live websites using USPS and an additional 339,458 sites that used USPS historically and 184,783 websites in the United States.
USPS websites that are also using other technologies.
Get a list of 555,335 websites using USPS which includes location information, hosting data, contact details, 215,877 currently live websites and an additional 231,963 domains that redirect to sites in this list. 339,458 sites that used this technology previously and 184,783 websites in the United States currently using USPS.
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