Email & DNS

Look up MX records for a domain to find its mail servers.

Check SPF records for a domain and parse the policy.

Check DMARC policy for a domain.

Look up DKIM public key for a domain and selector.

Look up BIMI record for a domain's brand logo indicator.

Check MTA-STS policy for a domain to enforce TLS for email.

Look up SMTP TLS Reporting (TLSRPT) record for a domain.

Paste raw email headers to analyze routing, delays, and auth results.

Build a valid SPF TXT record from a form.

Build a valid DMARC TXT record from a form.

Run a full email health report for a domain.