Email Verifier API
Stop bounces, block fraud, and clean your lists in real-time.
🚀 Try It Now
Try the API directly:
curl "https://email-verifier.payloadic.com/api/v1/syntax?email=hi@payloadic.com"
🔌 API Endpoints
GET/api/v1/auditFull SMTP Verification (Premium) - Performs deep audit including SMTP handshake, MX record lookup, and fraud scoring. Returns comprehensive verification data with trust score.
Parameters: email (required)
Example:
curl "https://email-verifier.payloadic.com/api/v1/audit?email=user@gmail.com"
GET/api/v1/syntaxSyntax Validation (Fast & Free) - Extremely fast local check for format, RFC compliance, and domain structure. No external network calls. Perfect for real-time UI feedback.
Parameters: email (required)
Example:
curl "https://email-verifier.payloadic.com/api/v1/syntax?email=hi@payloadic.com"
🚀 Key Features
Real-Time SMTP Verification
We connect to the mail server to confirm the user actually exists—without sending an email.
Disposable Detection
Instantly block 50,000+ temporary email domains like Mailinator, TempMail.
Privacy-First
We don't store emails, ensuring GDPR/CCPA compliance.
Trust Score
Get a single 0.0 to 1.0 score to make instant decisions. Block users with score < 0.5.
⚡ Always Fresh Data
We never serve stale data. Every request performs a live SMTP handshake in real-time, ensuring you never accept a disposable email that was created 5 minutes ago.
B2B Intelligence
Detect role accounts and free providers to qualify B2B leads.
📊 Example Response
{
"object": "email_verification",
"email": "john.doe@gmil.com",
"status": "undeliverable",
"did_you_mean": "john.doe@gmail.com",
"trust_score": 0.05,
"account": {
"user": "john.doe",
"host": "gmil.com",
"is_role_account": false,
"is_free_provider": true,
"is_disposable": false
},
"domain_details": {
"status": "active",
"has_valid_mx": true,
"accepts_all": false,
"provider": "google"
},
"technical": {
"smtp_status": "550",
"mx_server": "172.253.115.27"
},
// Note: duration_ms is now returned in X-Response-Time header
"request_id": "req_a1b2c3d4e5f6"
}What This Data Tells You
Trust Score
Get instant fraud risk assessment. A single score from 0.0 to 1.0 helps you make split-second decisions—block suspicious signups automatically, flag risky transactions, or fast-track trusted users.
Typo Detection
Catch mistakes before they become bounces. When users mistype their email, we suggest the correct address—turning failed signups into successful conversions and improving user experience.
Disposable Email Blocking
Instantly identify and block temporary email addresses. Protect your platform from fake accounts, spam registrations, and users who don't intend to engage long-term.
B2B Lead Qualification
Identify corporate vs. personal emails automatically. Prioritize leads from business domains, filter out free email providers, and focus your sales team on high-value prospects.
Role Account Detection
Spot generic addresses like info@ or support@. These often indicate lower engagement potential—helping you segment users and tailor your communication strategy accordingly.
Real-Time Deliverability
Know immediately if an email can receive messages. Our SMTP verification confirms the mailbox exists right now—not yesterday, not last week, but at this exact moment.
🛡️ Built for Production
Clear, Actionable Responses
Every response includes detailed context and request IDs. When something goes wrong, you'll know exactly what happened and how to fix it—no guessing, no cryptic errors.
Graceful Rate Limiting
Built-in rate limits protect both you and our infrastructure. Clear headers tell you exactly when you can make your next request, so your app can handle limits elegantly.
Reliable & Resilient
Designed for high availability. Our infrastructure handles spikes gracefully, and when issues occur, you get clear status codes and helpful error messages—never left in the dark.
Developer-Friendly: All error responses follow consistent, predictable formats with detailed documentation. Every error includes a unique request ID for easy troubleshooting and support. For complete technical error reference, see the API documentation on RapidAPI.
💡 Use Cases
Protect Sign-Up Forms
Prevent bots and fraudsters from registering with fake or disposable emails.
Real-Time Form Validation
Validate emails instantly during signup to prevent bounces and protect your sender reputation.
B2B Lead Qualification
Filter out emails from public providers and prioritize leads with corporate domains.
E-commerce Fraud Check
Flag high-risk orders using disposable emails or catch-all domains to reduce chargeback risks.
🔐 Privacy & Security
🔒 Zero-Knowledge Storage
We verify the email and immediately discard it.
🛡️ GDPR Compliant
Our architecture acts as a Data Processor, ensuring full compliance with privacy regulations.
🔐 TLS 1.3 Encryption
All data in transit is secured via TLS 1.3 encryption for maximum security.
🔌 Integration Example
const axios = require('axios');
async function verifyEmail(email) {
const options = {
method: 'GET',
url: 'https://email-verifier-smtp-disposable-check.p.rapidapi.com/audit',
params: { email },
headers: {
'X-RapidAPI-Key': 'YOUR_API_KEY',
'X-RapidAPI-Host': 'email-verifier-smtp-disposable-check.p.rapidapi.com'
}
};
try {
const response = await axios.request(options);
const { status, trust_score, did_you_mean } = response.data;
if (status !== 'deliverable' || trust_score < 0.5) {
console.log('Block this user!');
}
if (did_you_mean) {
console.log(`Did you mean: ${did_you_mean}?`);
}
} catch (error) {
console.error(error);
}
}
// Direct demo access (no RapidAPI proxy)
// curl "https://email-verifier.payloadic.com/api/v1/audit?email=hi@payloadic.com"📖 Access & Documentation
This API is available through RapidAPI. Direct access with rate limiting is also available.
Complete, up-to-date documentation and interactive endpoint testing are available on RapidAPI. All API endpoints can be tested directly in the RapidAPI console with live examples and response schemas.