Free Email Verifier

Check if any email address is valid, deliverable, and safe to send to. Real SMTP verification included.

5 free checks per day without an account. Sign up free for 25/day.

What We Check

Format

Validates the email format against RFC 5322. Catches typos and malformed addresses before SMTP check.

MX Records

Confirms the domain has valid mail exchange records — a prerequisite for any email to be delivered.

SMTP Verification

Connects to the mail server and performs a handshake to confirm the mailbox exists without sending an actual email.

Catch-all Detection

Identifies catch-all domains and provides a probability score (0–100) for the specific address being valid.

Disposable Email

Checks against 2,000+ known disposable email providers (Mailinator, Guerrilla Mail, etc.).

Role-based Detection

Flags role-based addresses (info@, support@, sales@) that are less likely to be individual inboxes.

Related Tools & Resources

Last updated: March 2026

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