Amit Agarwal: How to Verify an Email Address?

From Amit Agarwal: How to Verify an Email Address? . “When you send an email to someone, the message goes to an SMTP server which then looks for the MX (Mail Exchange) records of the email recipient’s domain. For instance, when you send an email to, the mail server will try to find the MX records for the domain. If the records exist, the next step would be to determine whether that email username (hello in our example) exists or not. Using a similar logic, we can verify an email address from the computer without actually sending an email message. Here’s how…”