Email verification is a method that when a visitor subscribes to an organization's email list, the visitor gets a unique link to approve receiving emails from the business.
This link both protects the business from having unvalidated email adresses and the user from getting unwanted emails. Email verification also helps in the improvement of the company's email account.
Reaching the proper receivers is crucial for businesses in order not to end up with spam folder of subscribers.
There are many verification tools that are available freely online. Using those tools eases the way of organizations which want to do email list cleaning.