Documentation
Welcome to PureSignup documentation. Learn how to integrate disposable email detection into your application in minutes.
Ready to get started?
Check if an email is disposable with a single API call. No complex setup required.
5-Minute Quickstart →What is PureSignup?
PureSignup is a powerful API that detects and blocks disposable email addresses during user signup. With over 160,000+ verified disposable domains from 6 authoritative sources, we provide industry-leading protection against fake signups.
Quick Example
Here's how simple it is to check if an email is disposable:
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://puresignup.com/api/v1/check?q=user@guerrillamail.com"Response for a disposable email:
{
"success": true,
"data": {
"subject": "user@guerrillamail.com",
"subject_type": "email",
"risk_level": "high",
"domain": "guerrillamail.com",
"sources": ["SRC_A", "SRC_B", "SRC_E"],
"last_updated": "2025-11-17T18:29:54.827Z",
"checked_at": "2025-11-17T18:30:00.000Z"
}
}Key Features
Industry-Leading Coverage
160,000+ disposable domains from 6 authoritative sources, updated daily to catch the latest threats.
Lightning Fast
Sub-80ms response times with indexed database lookups. Your users won't notice any slowdown.
Simple Integration
One REST API endpoint. Works with any programming language or framework. Get started in 5 minutes.
Multi-Source Verification
Aggregated data from trusted sources for maximum accuracy and confidence in results.
Popular Integration Guides
Next Steps
- Follow the quickstart guide to integrate in 5 minutes
- Learn about authentication and API keys
- Explore the check endpoint in detail
- See our domain sources and coverage statistics