Instant SPF, DKIM, and DMARC test for any domain. See your overall deliverability score and get tailored fixes — in seconds.
We only perform read-only DNS lookups. No data stored.
Checking DNS records for …
Deliverability Score:
Taildove configures SPF, DKIM, and DMARC the moment you connect your domain — and monitors your reputation 24/7 so issues get caught before they affect your sends.
Three DNS records control whether your email lands in the inbox or the spam folder. Most companies have at least one missing.
SPF
Sender Policy Framework
Tells receiving servers which IPs are allowed to send email on behalf of your domain. Without it, anyone can impersonate you — and inbox providers know it.
DKIM
DomainKeys Identified Mail
Adds a cryptographic signature to every email you send. Receiving servers verify the signature against your public DNS record. Tampering with the email in transit breaks the signature.
DMARC
Domain-based Message Authentication
Ties SPF and DKIM together and tells inbox providers what to do with messages that fail both — reject them, quarantine, or let them through. It also sends you reports of who's sending from your domain.
Is this tool free?
Yes — completely free, no account required. We perform read-only DNS lookups against your domain's public records.
Why is my DKIM showing as not found?
DKIM keys are stored under a selector prefix (e.g. google._domainkey.yourdomain.com). We check the most common selectors. If you use a custom selector your platform isn't on our list, it may not be detected — but that doesn't mean it's missing.
My SPF passes but emails still land in spam. Why?
SPF alone isn't enough. Inbox providers weigh DKIM, DMARC, sending reputation, bounce rates, and complaint rates. Use Taildove to monitor all of these in one place.
What does a score of 70–89 mean?
Grade B — your authentication is mostly in place but has gaps. Commonly this means DMARC is present but set to 'none' (no enforcement), or DKIM wasn't detected. Fix the highlighted issues to reach Grade A.
Can I check a domain I don't own?
You can look up public DNS records for any domain. The tool only reads publicly available DNS records — we don't access inboxes or private data.
