Free, open DMARC monitoring. One step, no signup.
Enter your domain and we mint a private report address bound to it. Publish one DNS record and mailbox providers start emailing you daily DMARC aggregate reports — who's sending mail as your domain, and whether it's passing SPF and DKIM.
- Enter your domain above — no account, no email required.
- Publish the TXT record we give you at
_dmarc.yourdomain.com. - Reports start arriving from mailbox providers, typically within 24–72 hours — watch them on your public dashboard.
Why DMARC aggregate reports?
DMARC lets you ask mailbox providers to tell you who is sending email
that claims to be from your domain — your own servers, a marketing
tool you forgot about, or someone spoofing you entirely. Aggregate
(RUA) reports summarize that traffic daily: source IPs, SPF/DKIM
results, and what the provider did with each message. Reviewing them is
the standard first step before moving a domain from p=none
(monitor) to p=quarantine or p=reject.
Dashboards are public for any registered domain. dmarcbin trusts reports from known mailbox providers (Google, Microsoft, Yahoo, and others) and clearly separates anything it can't verify — see our own dashboard for an example.