The average coach's list has 20–30% invalid addresses. Every bad email hurts your deliverability score — and tanks open rates right before a launch.
Paste a single email or upload a CSV / Excel file of up to 100 addresses for free.
Each email is scored as Safe, Risky, or Dangerous based on real deliverability signals.
Export only the safe addresses and re-import into your email platform — launch protected.
We use this to track your free usage across sessions. Up to 100 checks free — no card needed.