Address validation is the process of verifying and standardizing mailing addresses, ensuring that they are accurately entered into a list or database. This helps to improve list building efforts, as well as delivery success for mail and packages. Address validation can be done manually or through software, often with access to up-to-date postal records. By verifying and correcting addresses, businesses can reduce the amount of returned mail and undeliverable packages, saving both time and money.

Some benefits of address validation include improved customer satisfaction, reduced return rates and shipping costs, and better data accuracy for mailing and marketing campaigns. Additionally, using a validated address can help ensure timely delivery of important documents and packages.

Address validation comes in many different forms. The most common type is called CASS Certification. This is a process that verifies the accuracy of an address against the United States Postal Service's (USPS) database. Other types of address validation include international address validation and Canadian address validation.

CASS Certification is the most common type of address validation because it is required by the USPS for all bulk mailings. This certification verifies that an address exists and is deliverable by the USPS. In order to obtain CASS Certification, businesses must submit their mailing list to the USPS for processing. The USPS will then return a certified list of addresses that can be used for bulk mailings.

International address validation is another type of address validation that is often used by businesses that ship products to international destinations. This type of validation verifies that an address is valid and deliverable in the country of destination. In order to obtain international address validation, businesses must submit their mailing list to a company that specializes in this service.

Canadian address validation is the third type of address validation that is available. This type of validation is similar to CASS Certification in that it verifies the accuracy of an address against the Canada Post's database. In order to obtain Canadian address validation, businesses must submit their mailing list to a company that specializes in this service.