Email Validator will help you verify whether the entered email address is valid or not by carrying out a procedure. You have to enter the email id and then will extract the MX record from the entered email. After that will try to connect with the server so as to verify this email id exist in real or not. The results accuracy depends upon the server response, some server tends to reject the request and in that case, the result is not accurate. But in 99.5% case, it's successful.