https://articlescad.com/short-guide-to-choosing-the-right-email-verification-software-129583.html

Email verification refers to the process of checking the email addresses of different customers and the results of this verification show if an address is correct, valid and belongs to a real user. This process helps the person or organization that does the verification to eliminate fake or spam email addresses, which reduces costs with keeping invalid email addresses and ensures a higher degree of delivering the emails to the targeted audience.