How does email validation really work?
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Any good bulk email validator will perform a number of checks to determine the probability that an email is valid or not without actually sending an email to the email address it is checking. While no method is foolproof, doing bulk email verification is highly recommended for any serious email marketer to keep email deliverability high in order to maximize email ROI.
A good email verification tool can help determine which emails are valid, in bulk and at scale. A good email verification service is fast, accurate, and easy to use. If you want to send emails like the big guys, without the resources to remember to do bulk email verification or developers to implement complicated APIs, then I recommend a solution I founded called clearout. It's a true set-it and forget-it solution that takes the pain out of bulk email verification.
