Last updated: July 2026
DMARCKeeper provides email-authentication diagnostics (SPF, DKIM, DMARC checks), DMARC report monitoring, and configuration guidance. Free tools are provided as-is, without registration.
Free checks are rate-limited per user. Automated scraping of the checker or reselling its output requires our written consent.
You confirm you're authorized to run checks and configure DNS for the domains you connect. DNS changes are applied by you, in your own DNS provider; review every record before publishing.
Guidance is informational, not professional advice. Email authentication involves systems outside our control (your DNS host, your sending services, receiving mailbox providers). We do not guarantee deliverability outcomes, and we are not liable for mail delayed, quarantined or rejected as a result of configuration changes — including changes made following our recommendations. The enforcement decision (moving to quarantine/reject) is always yours.
Paid subscriptions, when available, are billed through our merchant of record; taxes are handled by them. Cancel anytime; access lasts to the end of the paid period. Fees are non-refundable except where required by law.
We may suspend accounts that abuse the service or violate these terms. You may delete your account at any time.
We'll post updates here; material changes will be emailed to monitoring customers.
legal@ — at this domain.