An email validator typically performs several checks:
1. Syntax Check: Ensures the email address has the correct format (e.g., user@example.com). 2. Domain Validation: Verifies that the domain of the email address exists and is configured to receive emails. 3. Mailbox Verification: Checks if the specific email address exists and is capable of receiving emails. 4. Catch-All Check: Identifies if a domain is set up to receive all emails sent to it, regardless of the username. 5. Spam Trap Detection: Detects addresses known to be spam traps, which can harm your sender reputation.