Fast, reliable email validation API built for developers. Verify syntax, check domains, detect disposables—all in milliseconds.
const response = await fetch('https://api.mailcheck.dev/v1/validate', {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key',
'Content-Type': 'application/json'
},
body: JSON.stringify({
email: 'user@example.com'
})
});
const { valid, checks } = await response.json();
// ✓ Valid email with detailed checks
Comprehensive validation checks built on modern infrastructure
Sub-50ms average response times. Built on edge infrastructure to ensure your users never wait.
RFC 5322 compliant format checking. Catch malformed addresses before they cause issues.
Real-time MX record lookups to verify domains have valid mail servers configured.
Identify temporary email services with daily-updated database of disposable domains.
Detect common typos like "gmial.com" and suggest corrections automatically.
Identify role-based emails (info@, support@, admin@) for better user targeting.
Create your account and get your API key instantly. No credit card required.
Start with 100 free validations per month
Start free. Scale as you grow. No hidden fees.
Join developers building better applications with reliable email validation