Catch disposable emails, fake and VoIP phone numbers, and VPN, proxy or Tor traffic with one API call. Every check comes back with a 0–100 risk score and the reasons behind it.
support@mailinator.com
deliverability
high
mx found
Yes
disposable
Yes
role account
Yes
free provider
No
3
checks in one API
1
credit per lookup
100
values per batch
190+
countries covered
What each check catches
Explainable risk scores
No black box. Each point in a VerifyGrid risk score comes from a signal listed in risk_reasons, so you can explain a decision to a customer, tune your thresholds, and trust what you ship.
0–29
Allow
30–69
Review
70–100
Block or verify
Default thresholds. In the dashboard you can change them, block or review specific signals, keep allow and block lists, and limit signups to the countries you serve.
Email check
support@mailinator.com
How it works
1.Sign up, get a key
Verify a mobile number to unlock 100 free credits. No credit card.
2.Send the signup
One request with the email, phone, and IP, or any one of them.
3.Act on the decision
Get allow, review, or block from your own rules, with every reason spelled out.
curl -X POST https://verifygrid95.base44.app/functions/signup-check \
-H "Content-Type: application/json" \
-H "x-api-key: $VERIFYGRID_KEY" \
-d '{"email": "support@mailinator.com",
"phone": "+44 20 7946 0958",
"ip": "185.220.101.1"}'{
"decision": "block",
"risk_score": 100,
"decision_reasons": [
"risk score 100 is at or above your block threshold (70)"
],
"risk_reasons": [
"email: disposable email domain",
"email: role-based address",
"ip: Tor exit node"
],
"score_notes": [
"+10: more than one check looks risky",
"+15: phone country GB differs from IP country DE"
],
"checks": { "email": { ... }, "phone": { ... }, "ip": { ... } },
"credits_used": 3
}Use cases
Flag disposable emails, VOIP numbers, and VPN/proxy IPs at signup so suspicious accounts can be reviewed before they cause harm.
Process imports and existing lists in bulk to remove invalid entries before they hurt deliverability or waste outreach budget.
Score and filter incoming leads by validity and risk so your team spends time on the contacts most likely to convert.
How it compares
Many tools focus on US markets and charge separately per product. VerifyGrid takes a different approach — without claiming to be the only option that works.
VerifyGrid is API-first. Any tool that speaks HTTP can call it — including Zapier, Make, and n8n through their HTTP / Webhook steps.
Native no-code apps are on the roadmap.
See the API docsClear guides, an API reference, and copy-paste code samples to get from zero to first call in minutes.
FAQ
Start with 100 free credits after a quick phone check. Pay only for what you use after that, from $0.010 per lookup.