domain-health-checker
Domain Health Checker
Run a full email authentication and DNS audit of any domain in seconds.
Instantly audit a domain's email authentication and DNS setup. The Domain Health Checker inspects MX, SPF, DKIM, DMARC, BIMI and blacklist status in one pass and grades each area so you know exactly what to fix.
The Full Audit
Enter any domain and we run a live, read-only audit against public DNS and blacklist providers:
Every check returns a pass, warning or fail with a plain-English explanation.
Frequently asked questions.
Is this check safe to run?
Yes. It is 100% read-only and only queries public DNS records and blacklists. Nothing is sent to your domain.
How often should I check domain health?
Any time you change email providers, add a sending tool, or notice deliverability issues.
What's the difference between this and the Deliverability Checker?
This tool gives you a detailed pass/warn/fail breakdown for each of the six checks, while Deliverability rolls the same signals into a single 0-100 score.
Do I need to fix every warning shown?
Not necessarily — warnings flag areas for improvement, but only failures typically block mail delivery. Prioritize fails first, then work through warnings.
Can I check a domain I don't own?
Yes — everything checked here is public DNS information, so you can safely audit any domain, including competitors or vendors.
Why do some checks show "no record found" instead of a status?
That means the DNS record simply doesn't exist for that domain — common for BIMI or DMARC on domains that haven't set them up yet.
Struggling with deliverability?
