BounceProtect
Clean your email lists before you send
Check your DMARC policy in seconds.
Check if a domain has a DMARC record and validate its policy. Instantly look up DMARC DNS records and see what protection your domain has against spoofing.
What is DMARC?
DMARC (Domain-based Message Authentication, Reporting and Conformance) builds on SPF and DKIM to tell receiving servers what to do when an email fails authentication — monitor it, quarantine it, or reject it outright. A policy of "reject" gives you the strongest protection against phishing and spoofing using your domain.
Enter a domain above to see results here.
Want to validate your whole list?
BounceProtect validates emails in bulk — SMTP, MX, catch-all detection, and company intelligence.
18.4M
emails validated this month
42,000+
domains protected
99.2%
accuracy on independent benchmarks
99.2%
accuracy on independent benchmarks
Frequently asked
p=none monitors only — failing emails are delivered but you receive reports. p=quarantine sends failing emails to the spam folder. p=reject blocks failing emails entirely. Start at p=none to understand your email flow, then move up gradually.
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Done with the generator?
Make sure none of your 10,000 contacts are about to bounce.
You just authenticated your domain. Now check the list you're about to send is clean. BounceProtect verifies email addresses in bulk — catch-all detection, SMTP validation, MX checks — before they damage your sender reputation.
87%
Average bounce rate reduction in first 30 days
12s
Average analysis time for a 10k list