Built because email validation should be honest.
Every competitor gates basic layers behind premium tiers. MailSentry gives you everything on every plan.
Thao Le
Founder
I started MailSentry because every email validation tool I tried charged enterprise prices for commodity features. Same tech, different wrappers, escalating prices.
So I built something leaner. One API call, 11 layers, every layer on Free. Being solo means I read every support email and ship fixes the same week.
The story
Late 2025
Researched the market. Every tool gated basic features behind premium tiers.
Early 2026
Built MailSentry — 11 layers on every plan, under 50ms, honest pricing.
March 2026
Shipped the API, bulk validation, and email finder. Free tier: 1,000 checks/month.
GDPR committed
≤3% bounce guarantee
Every feature, every plan
Stop bad emails. Pay 80% less.
5,000 bonus creditsNo credit card≤3% bounce guarantee