API Endpoint:
https://stg-secure.shippingapis.com/shippingapi.dll?API=PTSTPod&XML=
API Description:
The USPS Track Proof of Delivery API allows developers to request proof of delivery notifications via email. Track Proof of Delivery is a letter that includes the recipient's name and their signature.<br><br>
This API is part of the USPS Web Tools API library which provides access to USPS data free of charge.
SSL Support:
Yes
API Portal / Home Page:
Twitter URL:
https://twitter.com/USPS
Developer Support URL:
https://www.usps.com/business/web-tools-apis/general-api-developer-guide.htm

Authentication Model:
Primary Category:
Secondary Categories:
Device Specific:
No
Scope:
Docs Home Page URL:
Supported Response Formats:
Is This an Unofficial API?:
No
Is This a Hypermedia API?:
No
Restricted Access ( Requires Provider Approval ):
No
Type:
Supported Request Formats:
Architectural Style:
Version:
3.6
Is the API Design/Description Non-Proprietary ?:
Yes
Other(not listed):
0
Other(not listed):
0
Version Status:
Recommended (active, supported)
Direction Selection:
Provider to Consumer