Real-time validation typically involves several steps:
Syntax Check: The email address is checked for correct syntax based on standard email format rules. Domain Check: The domain part of the email address is verified to ensure it exists and can receive emails. MX Record Check: The Mail Exchange (MX) records of the domain are checked to verify that the domain has a mail server that can accept emails. Mailbox Verification: The email validation service performs a real-time check to confirm that the specific mailbox exists and is active.