Email validation typically involves several checks:
Syntax Check: Verifies if the email address is in the correct format. Domain Check: Ensures that the domain of the email address is active and can receive emails. MX Record Check: Confirms that the domain has valid Mail Exchange (MX) records. SMTP Authentication: Checks the existence of an email address without sending an actual email. Blacklist Check: Verifies if the email address is on any known spam or blacklist databases.