Free tool
Email Verifier
Check whether a work email is deliverable, catch-all, or invalid.
Try a single address before you integrate.
Single email verification
Start with one work address.
Use the form below to begin the free verification flow.
How it works
What the tool checks.
The verifier is meant for one high-value address at a time. It helps you check whether an address looks deliverable, whether catch-all behavior is involved, and whether the result should be treated as identity-level confidence rather than only mailbox acceptance. That makes it a better fit for sales, recruiting, fraud review, onboarding, and other person-level workflows.
If you are deciding between bulk list hygiene and person-level validation, start with the identity verification vs. email verificationguide. For SMTP edge cases, read about why SMTP verification falls short.
Common questions
FAQ
Is this email verifier free?
Yes. You can verify a single email address for free. If you need more volume, the API and docs are ready when you are.
What does the verifier check?
It checks whether an address maps to a real work identity, including deliverability, catch-all behavior, and identity signals that basic SMTP probing can miss.
What is catch-all email verification?
A catch-all domain accepts mail for every address, which makes standard verification unreliable. Identity-first verification adds context so you can make a better call.
How is this different from other tools?
Many tools stop at SMTP probing. Relentless Identity adds identity-provider signals, alias resolution, and multi-domain discovery so you can verify a real person.
Learn more