4 Comments
author

You can use this webform to check an address one-by-one

https://tools.usps.com/zip-code-lookup.htm?byaddress

To use their bulk address tools, you really need web programmer to use the server based tools called "APIs". The People's Audit can be used to validate both the residential and mail addresses for your entire state. If you want to do it yourself, you would have to work with a US Post Office vendor that have the same type of software printer use to check batches of addresses before calculating postage.

Expand full comment

I just got on the USPS website.

The documentation really sucks.

Do you have any training videos that explain how to get the CASS data and how to use it?

Expand full comment

I just got on the USPS website.

The documentation really sucks.

Do you have any training videos that explain how to get the CASS data and how to use it?

Expand full comment