Free Domain, DNS, Email & Website Health Tools

Run focused checks for DNS, email authentication, SSL, website status, blacklist reputation, reverse DNS and domain health — all in one place.

Run Full Domain Health Check Browse tools below
  • 100% Free
  • No Signup
  • Instant Results
  • Domain, DNS, Email & Website Checks

Browse tools by category

Choose a focused tool for the exact issue you want to check.

Not sure where to start?

Choose a path based on what you want to check or fix.

Fix website or SSL issues

Check SSL, HTTP headers and website status.

View Website Tools

Need help fixing what the tools find?

Use our solution pages to understand common issues and get help from our technical team or our technical team.

Email Deliverability Fix

SPF, DKIM, DMARC, MX and reverse DNS help.

DNS & Domain Fixes

Records, nameservers, expiry and routing.

Blacklist & Reputation Help

IP, domain and mail reputation recovery.

SSL & HTTPS Fixes

Certificate, CAA and HTTPS redirect help.

Website Technical Fixes

Headers, redirects and availability fixes.

Hosting & VPS Help

Server, DNS zones and VPS configuration.

Frequently asked questions

Yes. CheckDomainHealth tools are free to use and do not require signup.
Start with the Domain Health Checker if you want a complete overview. Use focused tools when you already know what you want to check.
No. The tools only check public DNS, domain, email, SSL and website signals. They do not modify your settings.
No. They help identify technical configuration issues, but they do not guarantee inbox placement, security or uptime.
Yes. Solution pages connect you with our technical team for DNS, hosting, VPS and email help, and our technical team for website technical fixes.

Still need help?

Our experts can help you fix issues and configure your domain, email and server.

Get Expert Help