For non-profits, every email matters. Whether you are sharing fundraising campaigns, event invitations, or impact updates, you cannot afford to lose contact with donors and supporters because of invalid emails.
Validate donor, volunteer, and sponsor emails that generic tools reject.
Real-Time Results, No Emails Sent
Clean your lists instantly before launching fundraising or awareness campaigns.
7-Step Verification Process
Covers SMTP, DNS, MX, pattern analysis, and more for industry-leading accuracy.
Built for Scale
Perfect for non-profits managing large supporter databases and multiple campaign lists.
Make Every Fundraising Email Count
Your mission depends on keeping supporters engaged. Ensure your campaigns, newsletters, and event reminders reach their inbox and inspire action.
1B+
emails verified
99%
SMTP verification accuracy
99%
catch-all verification accuracy
Get Over 50% More Valid Supporter Contacts
Many donor lists include catch-all domains that other verifiers discard. Listmint checks these in real time so you can reach more donors, volunteers, and advocates with your message.
Bounced emails can get your domain flagged, hurting future campaigns. Listmint reduces bounces to under 1 percent, so your appeals, newsletters, and updates consistently reach inboxes.
Bulk Uploads and Seamless Exports
Verify thousands of donor and volunteer contacts in minutes. Export clean data directly back into your CRM or marketing platform without manual effort.
Data You Can Trust
Other verifiers average about 55% valid results on nonprofit lists, which means nearly half your data is wasted. Listmint customers see up to 84% valid results, keeping your engagement rates high.
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