Free email verifier

Yes. No signup, no credit card, no dark patterns. You get 10 checks per hour per IP — enough to manually spot-check suspicious signups. For unlimited checks and the full risk breakdown in JSON, grab an API key from the VerifyWall API.

We run the same disposable email database and MX record validation the paid API uses — against 50,000+ known disposable providers. The free tool returns a simple pass/fail verdict; the full API returns a 0–100 risk score, VPN and datacenter signals, domain age, and raw JSON you can drop into your signup flow.

Same intelligence, different form factor. The free verifier is a manual, one-email-at-a-time tool. The API is a single REST endpoint you call inline during signup — send an email, get back a risk score and signal breakdown in under a second. Most teams integrate it in under 15 minutes.

False positives are rare. Our disposable database is curated, not algorithmic — we only flag domains we can verify as throwaway. If you ever see a false positive on the paid API, you can add the domain to a custom whitelist and override it.

The free tool is email-only. The VerifyWall API handles emails, domains, and IPs from one endpoint — same response shape, same 50,000+ signal database.