Complete Email Intelligence
Multi-layer verification for maximum deliverability and fraud prevention
Syntax Verification
RFC-compliant syntax checking to catch typos and formatting errors
MX Record Verification
Validate mail server existence and configuration
SMTP Verification
Real-time mailbox existence checking without sending emails
Disposable Detection
Identify temporary and disposable email addresses
Proven Results for Every Business
Email Marketing Campaigns
Improve deliverability and reduce bounce rates for better ROI
23% better delivery
User Registration
Prevent fake signups and ensure real user engagement
90% less fake accounts
Lead Generation
Qualify leads instantly and focus on valid prospects
40% time saved
Customer Data Hygiene
Clean and maintain accurate customer databases
35% cost reduction
Simple Integration
Comprehensive email validation with a single API call
// Email validation with deliverability check
const response = await fetch('https://api.1lookup.io/v1/validate/email', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
email: 'john.doe@example.com',
check_deliverability: true
})
})
// Response in 245ms
{
"email": "john.doe@example.com",
"quality": "good",
"result": "valid",
"resultcode": 1,
"subresult": "exists",
"free": false,
"role": false,
"disposable": false,
"fraud_score": 5,
"domain_age_days": 7825,
"domain_reputation": "excellent",
"mx_records_valid": true,
"smtp_valid": true,
"deliverability_score": 98,
"inbox_placement": "likely",
"activity_indicators": {
"social_media": true,
"professional_network": true,
"data_breaches": false
},
"tokens_used": 1
}Technical Specifications
Response Time
245ms average
Accuracy
99.5% guaranteed
Disposable DB
10,000+ domains
Data Freshness
Real-time checks