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Open API — 13 Endpoints

The complete Email Validation API toolkit

Syntax validation, MX/SMTP verification, disposable detection, risk scoring, SPF/DKIM/DMARC checks, and provider identification.

curl -G "https://email.toolkitapi.io/v1/email/validate" \
  -H "X-API-Key: YOUR_KEY" \
  --data-urlencode "[email protected]"
import httpx

resp = httpx.get(
    "https://email.toolkitapi.io/v1/email/validate",
    headers={"X-API-Key": "YOUR_KEY"},
    params={"email": "[email protected]"},
)
data = resp.json()
print(f"Valid: {data['is_valid']}, Deliverable: {data['is_deliverable']}")
const resp = await fetch(
  "https://email.toolkitapi.io/v1/email/[email protected]",
  {
    headers: { "X-API-Key": "YOUR_KEY" },
  }
);
const data = await resp.json();
console.log(`Valid: ${data.is_valid}, Deliverable: ${data.is_deliverable}`);
SMTP Probing | 500+ Disposable Domains | Free Tier Available | 20+ Provider Patterns

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Everything you need for email validation, intelligence, and deliverability.

Built for Developers

Designed to simplify your workflow, not complicate it.

⚡

Deep Validation

Syntax, MX, SMTP handshake, disposable, role-based, and catch-all — all in one call.

🛡️

Disposable Detection

Block 50,000+ disposable email domains. Updated weekly from community lists.

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Risk Scoring

Every address gets a 0-100 deliverability score based on 12 signals.

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Privacy-First

No email addresses are stored or logged. Stateless processing only.

13
API Endpoints
4
Categories
500+
Disposable Domains
20+
Provider Patterns

Start validating emails in minutes

One API key. 13 endpoints. SMTP verification, spam scoring, header forensics, and more.

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