Introduction Ask Anything

USPS Web Tools: Address Validation

Verify City State Lookup Zip code Lookup

USPS Web Tools: Domestic Mail Service Collections

Standard B Service Priority Mail Service First Class Mail Service Express Mail Commitment Service

USPS Web Tools: Track and Confirm API

Package Tracking Fields Package Tracking Track and Confirm by Email Proof of Delivery Return Receipt Electronic Track Proof of Delivery

Introduction Ask Anything

USPS Web Tools: Address Validation

Verify City State Lookup Zip code Lookup

USPS Web Tools: Domestic Mail Service Collections

Standard B Service Priority Mail Service First Class Mail Service Express Mail Commitment Service

USPS Web Tools: Track and Confirm API

Package Tracking Fields Package Tracking Track and Confirm by Email Proof of Delivery Return Receipt Electronic Track Proof of Delivery

Home USPS Web Tools: Track and Confirm APIReturn Receipt Electronic

Return Receipt Electronic

GET {{baseUrl}}/ShippingAPI.dll?API=PTSRre&XML={{xmlParam}}

Request Params

Key	Datatype	Required	Description
`API`	string
`XML`	string

Proof of Delivery

Track Proof of Delivery