Right-click any email address on any webpage. Get syntax, DNS, MX, and SMTP results in 2 seconds. Free forever.
Add to Chrome — FreeSelect any email on any page, right-click → Verify with Kaiju
Full 10-layer check: syntax, DNS, MX, SMTP, disposable
Small badge shows valid/invalid/risky without leaving the page
See how many checks you've used this month. Upgrade in-extension
Works without login for basic checks; add key for SMTP probing
LinkedIn, Gmail, CRMs, spreadsheets — any page with emails