Checker · Free tool
How healthy is your domain?
The Checker reviews your domain’s certificate, email, DNS and security headers in moments, and tells you what to fix first. Free.
To keep it free, each domain can be checked twice every 30 minutes.Open the Checker
What it checks
Website and certificate
- SSL/TLS certificate
- HTTP security headers
- HSTS preload list
- Website technology
- SPF, DKIM and DMARC
- MX records
- MTA-STS
- BIMI
Domain and DNS
- DNSSEC
- CAA records
- Reverse DNS of the mail server
- Domain expiry
And then
If it finds something, it suggests the modules that fix it in the plan configurator, already ticked. You fix it yourself, or we do.
MCP
The same analysis, as an MCP server, to use from your AI assistant.