If you are an online business and need to collect user information, then you need email address validations and address verification services. These are needed to ensure information that is given is clean and correct.
These processes should be utilized to make sure that you are not being duped and given the wrong information, as well as insuring what you have is the correct and legitimate address of said user. Email address validation is done to make sure that the email given by the client or user is formatted correctly.
This is to steer clear of users entering 3m email address format email address that are formatted the wrong way, as well as ensuring the legitimacy of the addresses since they can accidentally give us a wrong address or email address.
An email address verification function checks that the address wasn’t put in with multiple @ signs or commas instead of periods. You can do so by using a pre-programmed software that you can purchase, or if you are a real techie, then you can create your own syntax and protocol to do so.
On the other hand, address verification services is a procedure which is used to confirm the identity of the person claiming to own the credit card used to make a purchase. This method will verify the billing address of the credit card that was provided by the client with the address on file at the credit card company to which the card belongs.

What it does is the address verification services or AVS checks the numerical parts of billing address given by the credit card holder. Let’s say your address is 52 NoName Street, NoState, 60455. The AVS does is to check the street number, which is 52, and the post code which is 60455. Every so often, the AVS confirm the supplementary digits that are available such as the apartment number or door number.
This is a good thing for both parties. This is because the retailer or company that is being paid using a credit card will be ensured that the card holder avoids fraud. On the other hand, the card holder can be sure that he will receive the item that he ordered (if he is ordering online) and that he will be charged justly for what has been purchased.
There are times when credit card holders receive partial declines or false negatives from the address verification systems. This might be caused by a glitch in the system or a change in the address database, especially if the database is updated regularly. This will usually call for a manual override, voice authorization, or reprogramming of the AVS entries by the bank that issued the credit card.