Email Verification API with Free Domain Intelligence

Add email verification to your app and get free company data with every check. One API call, two powerful datasets—verify deliverability and identify your users instantly.

✓ Free Domain Intelligence — Company data included with every verification, no extra calls
✓ Sub-second Response — Real-time SMTP verification in milliseconds
✓ Simple Integration — Code examples for JavaScript, Python, Ruby, PHP, and more
✓ Fair API Pricing — Pay only for what you use, no monthly fees or hidden costs

Get API Key View Documentation

500 free verifications • No credit card required

                Verify Email API
              

                # Request
              

GET /v1/verify

                # Response
              

{
  "email": "user@example.com",
  "result": "deliverable",
  "reason": "accepted_email",
  "domain": "example.com",
  "domain_insight": {
    "name": "Example Inc.",
    "industry": "Technology",
    "employees": 500
  }
}

🚀

Real-time Validation

Verify emails at the point of capture with sub-second response times and 99.9% uptime reliability.

🔌

Easy Integration

Simple REST API with comprehensive documentation and SDKs for popular programming languages.

💡

Domain Intelligence

Gain valuable business insights from email domains, including company size, industry, and more.

How Our API Works

Simple integration, powerful results

API Request

# cURL Example
curl -X GET "https://app.fuegoverify.com/api/v1/verify?email=alex@techcorp.com&token=YOUR_API_KEY"

API Response

{
  "email": "alex@techcorp.com",
  "result": "valid",
  "reason": null,
  "role": false,
  "free": false,
  "disposable": false,
  "accept_all": false,
  "did_you_mean": null,
  "domain": "techcorp.com",
  "user": "alex",
  "success": true,
  "domain_insight": {
    "category": "organization",
    "name": "TechCorp Inc.",
    "industry": "Software Development",
    "country": "US",
    "ticker": "TCH",
    "employees": 3500,
    "description": "TechCorp Inc. is a leading software development company specializing in enterprise solutions."
  }
}

Integration Steps:

Get Your API Key

Make API Requests

Send HTTP requests to our verification endpoint with the email addresses you want to verify.

Process Responses

Receive comprehensive verification results with detailed status codes and domain intelligence.

Implement Logic

Use the verification results to enhance your forms, user registration, or marketing systems.

API Features & Capabilities:

Email Verification

Syntax validation
Domain existence check
MX record validation
Mailbox verification
Disposable email detection
Role-based email detection

Domain Intelligence

Company name identification
Industry classification
Employee count ranges
Stock ticker (for public companies)
Company headquarters location
Founded year information

What Developers Say

Trusted by developers and technical teams worldwide

★★★★★

Michael Johnson

CTO at StartupX

"The FuegoVerify API is incredibly fast and reliable. We integrated it into our signup flow and reduced fake accounts by 78%. The documentation is excellent too."

★★★★★

Alex Patel

Lead Developer at MarketCo

"Domain intelligence is a game-changer. Our sales team now gets instant company info on new leads, which helps them personalize outreach immediately."

★★★★★