How We Built Industry-Leading Email Validation Accuracy
Industry-leading accuracy doesn't happen by accident. Here's how HeroBounce combines multiple validation layers, advanced pattern detection, and continuous optimization to deliver reliable email validation.
The Multi-Layer Approach
Traditional email validation relies on a single point of verification. HeroBounce uses four distinct validation layers that work together to verify email deliverability.
Layer 1: Syntax and Format Validation
Checks email structure against RFC 5322 standards, catching obvious errors like missing @ symbols or invalid characters.
Layer 2: Domain and MX Record Verification
Verifies the domain exists and is configured to receive email by checking DNS and MX records.
Layer 3: SMTP Validation
Connects to the mail server and verifies the specific mailbox exists without actually sending an email.
Layer 4: Advanced Pattern Detection
Uses AI and historical data to identify catch-all domains, disposable emails, role addresses, and other edge cases.
Our Accuracy Targets
Our multi-layer approach combined with continuous learning is designed to deliver industry-leading accuracy:
Continuous Optimization
Email infrastructure constantly evolves. Our system adapts through continuous monitoring and optimization to maintain accuracy over time.