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Welcome to the Fraudiant API

The Fraudiant API is a RESTful API designed to help you detect and block disposable, temporary, or fraudulent email addresses and domains in real time. Our API follows REST principles and provides:
  • Resource-oriented URLs for intuitive endpoint structure
  • JSON-encoded responses for easy parsing
  • Standard HTTP methods (GET, POST, DELETE)
  • Standard HTTP status codes for error handling
  • Bearer token authentication for secure access
The Fraudiant API is continuously updated with new disposable email providers, spam domains, and enhanced validation rules to ensure your application always benefits from the latest fraud detection intelligence.

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Base URL

All API requests are made to: 
https://api.fraudiant.com

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Authentication

All API endpoints require authentication using Bearer tokens. Include your API key in the Authorization header of every request: 
Authorization: Bearer YOUR_API_KEY

Learn More About Authentication

View detailed authentication documentation and best practices

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Response Format

All responses are returned in JSON format with the following structure:

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Success Response (200)

{
  "status": 200,
  "email": "[email protected]",
  "domain": "example.com",
  "disposable": false,
  "mx": true,
  // ... additional fields
}

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Error Response (400, 429, etc.)

{
  "status": 400,
  "error": "The email address is invalid."
}

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Available Endpoints

Email Validation

Check if an email address is disposable, valid, or spam

Domain Validation

Validate domain reputation and configuration

Blocklist Management

Manage your custom domain blocklist (Pro only)

Rate Limits

Understand API rate limits and quotas

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Getting Started

1

Get Your API Key

Sign up at app.fraudiant.com and retrieve your API key from the dashboard.
2

Review Authentication

Learn how to properly authenticate your requests in the Authentication documentation.
3

Test the Email Endpoint

Make your first validation request using the Email Validation endpoint.
4

Check Rate Limits

Understand your usage limits in the Rate Limits documentation.

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Support

Need help? Check out these resources:
  • Documentation: Browse our comprehensive guides and API reference
  • Status Page: Monitor API uptime and performance
  • Email Support: Contact our team at [email protected]