We specialize in validating catch-all and hard-to-verify business domains.
Real-Time Results, No Emails Sent
Verify lists instantly, without sending a single email.
7-Step Verification Process
SMTP, DNS, MX, pattern analysis, role-based filtering, and more.
Built for Scale
Bulk list uploads, API access, and integrations for seamless client reporting.
Launch Email Campaigns That Actually Deliver
Marketing agencies trust Listmint to clean and verify their lists before every campaign at scale.
1B+
emails verified
99%
SMTP verification accuracy
99%
catch-all verification accuracy
Get Over 50% More Deliverable Client Emails
✅ Typical email verification tools leave 30–40% of client contacts in the catch-all bucket. ✅ Listmint verifies those addresses in real time, helping your agency contact 50%+ more valid emails from the same data.
Upload thousands of client contacts at once, verify in seconds, and export directly to your email platforms.
Real-Time API Access
Integrate Listmint’s verification into your signup forms or lead capture flows to make sure only valid contacts enter your CRM.
Protect Client Reputation & ROI
Other verifiers average ~55% valid on B2B lists. Listmint customers see up to 84% valid results, keeping the client sender reputation intact and boosting campaign ROI.
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