Email AddressValidation API
Verify email deliverability with real-time SMTP checks, disposable detection, and comprehensive fraud scoring. Improve your sender reputation and marketing ROI today.
99.5%
Validation Accuracy
245ms
Avg Response Time
10K+
Disposable DB Size
Complete Email Intelligence & Validation
Multi-layer verification for maximum deliverability and fraud prevention
Advanced Syntax Verification
RFC-compliant syntax checking to catch typos, formatting errors, and invalid email structures
MX Record & DNS Validation
Verify mail server existence, configuration, and DNS record validation for deliverability
Real-time SMTP Verification
Live mailbox existence checking through SMTP connection without sending emails
Disposable & Temporary Email Detection
Identify and block temporary, disposable, and role-based email addresses
Email Validation Use Cases & Results
Real businesses achieving measurable improvements in email marketing and data quality
Email Marketing & Campaign Optimization
Improve email deliverability rates, reduce bounce rates, and enhance sender reputation for better marketing ROI. Clean your email lists before campaigns.
- Reduce email bounce rates by 23%
- Improve sender reputation
- Increase open rates
- Lower marketing costs
User Registration & Account Creation
Prevent fake account signups and ensure real user engagement by validating email addresses during registration process.
- Block fake account creation
- Improve user quality
- Reduce spam registrations
- Enhance platform security
Lead Generation & CRM Data Quality
Qualify leads instantly by validating email addresses. Focus sales efforts on prospects with valid contact information.
- Improve lead quality scores
- Save sales team time
- Enhance CRM data accuracy
- Prioritize valid prospects
Customer Database Hygiene & Maintenance
Clean and maintain accurate customer email databases. Remove invalid emails to improve data quality and reduce costs.
- Reduce email service costs
- Maintain clean databases
- Improve data quality
- Enhance customer communication
Email Validation Market Insights
Industry research and statistics driving the need for email verification
Email Marketing ROI
HubSpot research shows email marketing generates $42 ROI for every $1 spent when properly optimized, while invalid emails cost businesses $1.60 per bad address.
Deliverability Challenges
Return Path research indicates 23% of legitimate emails never reach the inbox, while Mailchimpreports lists with poor hygiene see bounce rates exceeding 10%.
Email Data Quality Impact
6x
Higher Transaction Rates
30%
Emails Become Obsolete Yearly
$12.9M
Avg Cost of Poor Data Quality
Campaign Monitor found personalized emails deliver 6x higher transaction rates. Datanyze shows 30% of email addresses become obsolete annually, while Gartner estimates poor data quality costs organizations $12.9M annually.
Industries Using Email Validation
Trusted across sectors for email marketing optimization and data quality
Why Choose 1Lookup Email Validation?
The most comprehensive and accurate email validation service
Real-time SMTP Validation
Live mailbox verification without sending emails, providing the highest accuracy
Comprehensive Disposable Detection
10,000+ known disposable email providers with real-time updates
Deliverability Intelligence
Advanced scoring that predicts inbox placement and engagement likelihood
Bulk Processing Support
Validate large email lists efficiently with batch processing capabilities
Simple Email Validation Integration
Comprehensive email validation with a single API call
// Comprehensive email validation with deliverability intelligence
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,
check_disposable: true,
include_suggestions: true
})
})
// Comprehensive response in ~245ms
{
"email": "john.doe@example.com",
"quality": "good",
"result": "valid",
"resultcode": 1,
"subresult": "exists",
"reason": "mailbox_exists",
"free": false,
"role": false,
"disposable": false,
"catch_all": false,
"fraud_score": 5,
"domain_age_days": 7825,
"domain_reputation": "excellent",
"mx_records_valid": true,
"smtp_valid": true,
"deliverability_score": 98,
"inbox_placement": "likely",
"risk_level": "low",
"typo_suggestion": null,
"activity_indicators": {
"social_media": true,
"professional_network": true,
"data_breaches": false,
"last_seen": "2024-01-15"
},
"provider_info": {
"name": "Example Corp",
"type": "business",
"security_features": ["spf", "dkim", "dmarc"]
},
"tokens_used": 1,
"processing_time_ms": 245
}Email Validation API FAQ
Common questions about our email verification service
Email validation is the process of verifying that an email address is valid, deliverable, and safe to send to. It helps businesses improve email deliverability, reduce bounce rates, maintain sender reputation, and prevent fraud.
Our email validation API maintains 99.5% accuracy through multi-layer verification including syntax checking, DNS validation, MX record verification, and real-time SMTP checks without sending actual emails.
Our API detects disposable emails, temporary addresses, role-based emails (like info@ or admin@), catch-all domains, and risky email patterns. We maintain a database of 10,000+ known disposable email providers.
Our system establishes a real SMTP connection to the recipient's mail server and verifies mailbox existence without actually sending an email. This provides the highest accuracy for deliverability checking.
Yes, by removing invalid, bounced, and risky email addresses from your lists before sending campaigns, you can improve deliverability rates by up to 23% and maintain a better sender reputation.
Our email validation API averages 245ms response time. Most validations complete within 500ms, even with comprehensive SMTP checking enabled.
Technical Specifications
Average Response Time
245ms
Validation Accuracy
Enterprise-grade
Disposable Email DB
10,000+ domains
SMTP Check Method
Real-time
Bulk Processing
Up to 10K/batch
Global Coverage
Worldwide
Start Validating Email Addresses Today
Improve email deliverability, reduce bounce rates, and protect your sender reputation with our comprehensive email validation platform
100 free validations • Setup in 5 minutes • Premium support