Spam complaints can quickly hurt your sender reputation, throttle your campaigns, and push future emails into the junk folder. Many complaints come from sending to invalid, risky, or uninterested contacts.
Remove risky and inactive emails that often lead to spam complaints.
Real-Time Results, No Emails Sent
Get results instantly so you can remove problematic contacts before a send.
7-Step Verification Process
Includes SMTP, DNS, MX, and pattern analysis to filter spam traps and invalid addresses.
Built for Scale
Perfect for teams sending at high volume and protecting sender reputation.
Protect Your Reputation and Campaigns
Fewer spam complaints mean better inbox placement, higher engagement, and a healthier domain reputation.
1B+
emails verified
99%
SMTP verification accuracy
99%
catch-all verification accuracy
Get Over 50% Cleaner Lists for Safer Sends
Generic verifiers confirm only a portion of your contacts, leaving behind spam traps and invalid addresses. Listmint verifies them in real time, so you can send safely and keep complaints to a minimum.
Proof of Results: 84% Valid vs 55% Industry Average
Generic verification tools confirm only 55% of your contacts, which can result in more spam complaints and poor deliverability. Listmint customers see up to 84% valid results, which keeps complaint rates well below industry thresholds.
Avoid Bounces and Spam Traps
By removing invalid addresses and spam traps, Listmint lowers your risk of landing in spam folders and generating complaints.
Real-Time API for List Cleaning
Automatically verify new contacts as they enter your system, ensuring risky emails never make it into your campaigns.
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