EmailRep API
Overview
EmailRep is a free API that evaluates the risk and reputation of an email address in seconds. It checks signals like domain age, whether the email has been seen in data breaches, and social media presence to return a risk score. Developers use it to flag suspicious signups and reduce fraud without requiring user verification.
Beginner Tip
No API key is required for basic lookups — just send a GET request with the email address in the URL path. For higher rate limits and more detailed signals, register for a free API key at emailrep.io.
Available Data
Example Response
{
"message_id": "msg_abc123def456",
"status": "delivered",
"to": "[email protected]",
"subject": "Welcome!",
"timestamp": "2025-01-15T10:30:00Z"
} Field Reference
email The email address that was queried. reputation Overall reputation rating: high, medium, low, or none. suspicious True if the email shows signals of suspicious or fraudulent behavior. references Number of times this email has appeared in known data sources or breaches. details.blacklisted True if the email or its domain is on a known spam or abuse blacklist. details.domain_age Age category of the email domain, such as new (less than 1 year) or old. Implementation Example
const url = "https://docs.emailrep.io/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Matrix Score Breakdown
Fully tested on Apr 5, 2026
Technical Specifications
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