Free tool
DMARC Record Checker
Paste your DMARC record and we'll verify the syntax, policy strength and reporting setup — the authentication mailbox providers now expect.
How it works
- 1Paste your DMARC TXT record (starts with v=DMARC1).
- 2We check policy, alignment and reporting tags.
- 3Tighten your policy toward p=reject.
Questions
Frequently asked
What is DMARC?
A policy that tells receivers what to do with mail that fails SPF and DKIM — none, quarantine or reject — and where to send reports.
Do I need DMARC?
Yes. Gmail and Yahoo's bulk-sender requirements expect a published DMARC policy for senders at volume.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.
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