Newsletter managers rely on email to build, engage, and grow their audience. Invalid or fake email addresses waste sending credits, lower open rates, and damage deliverability.
Confirm free and paid subscriber emails that generic tools mark as “unknown.”
Real-Time Results, No Emails Sent
Clean lists instantly without delaying your next send.
7-Step Verification Process
Includes SMTP, DNS, MX, and pattern analysis for unmatched accuracy.
Built for Scale
Ideal for newsletters with tens of thousands of subscribers or multiple editions.
Keep Every Edition Deliverable
Your growth depends on consistent inbox placement. Clean lists keep your newsletter out of spam and in front of readers who engage.
1B+
emails verified
99%
SMTP verification accuracy
99%
catch-all verification accuracy
Get Over 50% More Valid Subscribers
Other tools throw away catch-all domains, including those used by your most valuable readers. Listmint verifies them in real time so you can keep and grow more of your audience.
Proof of Results: 84% Valid vs 55% Industry Average
Generic email verification tools average 55% valid results, leaving half your list unreachable. Listmint customers see up to 84% valid contacts, boosting engagement and revenue per send.
Real-Time API for Signup Forms
Add verification to your opt-in forms so every new subscriber is validated before joining your list. This keeps your data clean and protects your sending reputation.
Support, Dashboards, and Reporting
Monitor list health over time with visual dashboards. Our support team helps newsletter managers maintain high deliverability and avoid audience churn.
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