Email AddressValidation API
Verify email deliverability with real-time SMTP checks, disposable detection, and fraud scoring. Improve your sender reputation and marketing ROI today.
SMTP-verified
Validation Accuracy
<300ms
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
- 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 Mailchimp reports 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?
Accurate email validation with disposable detection and deliverability scoring built in
Real-time SMTP Validation
Live mailbox verification without sending emails, providing the highest accuracy
Disposable Email Detection
Extensive database of 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
Deliverability, disposable, and fraud checks with a single API call
// 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
})
})
// Full response in <300ms
{
"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
Technical Specifications
Average Response Time
<300ms
Validation Accuracy
SMTP-verified
Disposable Email DB
10K+ providers
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 email validation platform
7-day free trial • Setup in 5 minutes • Premium support