DEVELOPER API

Real-time Lead Qualification API

Integrate powerful lead qualification and domain intelligence into your applications with our simple, reliable API.

✓ Sub-second response times - Real-time qualification in milliseconds
✓ Domain intelligence included - Enhance your data automatically
✓ 1000 free qualification - Start integrating at no cost
✓ Implementation guides for all major languages - Easy to integrate

Get API Key View Documentation View Pricing

1000 free qualifications per month

/api/v1/qualify

GET https://app.fuegoverify.com/api/v1/qualify

?email= [email protected]

&token= YOUR_API_KEY

Response

{
  "email": "[email protected]",
  "valid_format": true,
  "valid_mx": true,
  "free": false,
  "disposable": false,
  "domain": "acmecorp.com",
  "user": "contact",
  "success": true,
  "domain_insight": {
    "category": "organization",
    "name": "ACME Corporation",
    "industry": "Manufacturing",
    "country": "US",
    "employees": 2500,
    "ticker": "ACME"
  }
}

🚀

Real-time Qualification

Qualify leads 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/[email protected]&token=YOUR_API_KEY"

API Response

{
  "email": "[email protected]",
  "valid_format": true,
  "valid_mx": true,
  "free": false,
  "disposable": 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 qualification endpoint with the email addresses you want to qualify.

Process Responses

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

Implement Logic

Use the qualification results to enhance your forms, user registration, or lead scoring systems.

API Features & Capabilities:

Email Validation

Format validation
Domain existence check
MX record validation
Disposable email detection
Free email detection
Typo suggestions

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 Fuego 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."

★★★★★