Our 6-layer verification engine combines SMTP validation, AI-powered catch-all detection, and domain intelligence to deliver industry-leading accuracy.
Each email goes through 20+ verification steps across 6 distinct layers
We validate the email format against RFC 5321 compliance, check for common typos, and identify obviously invalid patterns.
We verify the domain exists, has valid MX (Mail Exchange) records, and check SPF/DMARC configurations for security posture.
We connect to the mail server via SMTP and verify the mailbox exists without sending any actual emails. This is the most critical validation layer.
The biggest differentiator. When a domain accepts all addresses (catch-all), we don't just mark it "unknown" like competitors. Our proprietary AI analyzes multiple signals to verify individual addresses with 95%+ accuracy.
Why this matters: 30-50% of B2B emails are on catch-all domains. Competitors mark these as "unknown" and you lose the opportunity. We give you a real answer with confidence scoring.
We analyze domain reputation, detect risky email types, and identify email provider characteristics to give you a complete picture.
Our AI layer applies machine learning trained on millions of validations to boost accuracy on difficult cases. Enabled by default on all paid plans.
After all 6 layers (over 30 validation steps/modules), you get a comprehensive validation response
{
"email": "john.doe@company.com",
"status": "valid",
"is_valid": true,
"confidence": 0.95,
"details": {
"syntax_valid": true,
"dns_valid": true,
"smtp_valid": true,
"is_disposable": false,
"is_role_based": false,
"provider": "Google Workspace",
"mx_records": 5,
"has_spf": true,
"has_dmarc": true
},
"catchall": {
"is_catchall": true,
"confidence": 0.92,
"pattern_score": 0.88,
"resolved": true
},
"ai_enhancement": {
"used": true,
"method": "hybrid"
},
"performance": {
"response_time_ms": 487
}
}