What is CASS Certified Software?

Click2Mail uses CASS certified software to compare the addresses in your list to the US Postal Service's official delivery point validation database.  The software analyzes each of your addresses and corrects minor problems such as mising zip codes or misspellings; this process is called "standardization'.  Use of this software allows us to present you with a list of non-standard addresses, which are likely to be undeliverable.