Building the World's Most Accurate Email Deliverability Infrastructure
BounceLayer was created to solve a fundamental problem in modern email: high bounce rates destroying domain reputations, bloated legacy pricing, and slow verification tools.
Direct Socket Probing
We communicate directly over TCP Port 25 with recipient mail servers via RFC 5321 handshakes to verify genuine mailbox existence without ever sending an email.
Zero Data Retention
We never store, sell, or monetize your lead lists. Verification results are held ephemerally in encrypted Redis cache for 7 days before permanent deletion.
Live Firewall Defense
Over 100,000+ disposable domains and temporary burner mail services blocked in real time with continuous daily provider updates.
Transparent Pricing
Credits never expire. No hidden tier locks, no forced annual lock-ins, and deterministic 1-credit pricing per email verification.
Why We Built BounceLayer
Sales reps, marketing teams, and growth agencies were facing a silent crisis: outreach emails were randomly landing in spam folders because legacy email verifiers relied on cached, months-old DNS records and crude regexes.
Meanwhile, mail providers like Google Workspace and Microsoft 365 implemented aggressive firewall rate limits, catch-all routing, and anti-spam heuristics that outpaced outdated verification software.
We engineered BounceLayer from scratch using high-speed distributed socket workers, proprietary MX greylisting bypass algorithms, and real-time TCP connection pooling. The result is a verification platform that delivers 99.2% deliverability accuracy with sub-140ms response times.
Start Verifying Leads with 100 Free Credits
Test your single emails or upload your CSV list today. No credit card required.