How to Use the USPS Web API in C#
This tutorial explains step-by-step, how to integrate the USPS API using .Net (also works with C#). We also talk about an easier way to get the same USPS address data, from a much easier-to-use address API.
The USPS Web Tools API is notorious for its frequent downtimes, being difficult to use, and being poorly documented & supported.
************IMPORTANT DISCLAIMER************
If you use the USPS API, realize that you MUST use it to either send a letter or put a package into the mail. If not, you’re in violation of the USPS terms of service. That means that you could be subject to significant fines if you get caught.
But, if you still want to use it, we’ll show you how.
So with all of its problems, why would someone want to use the USPS API? Well, the API still provides access to some valuable USPS data.
And, in reality, the USPS offers multiple APIs:
– Address Verification API
– ZIPCode API
– Address Standardization API
Each of these APIs from the USPS performs specific functions such as address validation, address normalization, ZIP+4 appending, and more.
But, as we explain in this video, there is a MUCH easier way to get all of the same USPS address data using the .Net SDK for the Smarty US Street API. You get all of the same information but in a nice JSON response. And, this API is 100% documented and has fantastic customer support.
You can find a link to a free demo in the links listed below.
0:45 Overview of the USPS Validation Web APIs
1:30 Registering for a User ID with USPS
1:52 Project start — USPS Address Standardization API in C#
4:10 Results of Running the Sample
4:44 Alternative to USPS Web APIs
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USPS Registration
https://registration.shippingapis.com/
USPS API Docs
https://www.usps.com/business/web-tools-apis/address-information-api.pdf
USPS Web Tools
https://www.usps.com/business/web-tools-apis/welcome.htm
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SmartyStreets APIs
https://www.smarty.com/products/apis/us-street-api
Try SmartyStreets for Free
https://www.smarty.com/pricing
More about the USPS API
https://www.smarty.com/articles/usps-api
Music: https://www.bensound.com/
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