Free email tools
One-off checks without sending a test email. Free, no signup, same engines as the full report.
Blacklist checker
Check any IP or domain against 16 DNSBL feeds: Spamhaus, SpamCop, Barracuda and more.
DMARC validator
Fetch, parse and lint your DMARC policy with concrete hardening advice.
SPF & DKIM checker
Look up SPF records and common DKIM selectors for any domain.
DNS health
40+ checks on NS, SOA, MX and WWW records for any domain.
Want the full picture?
The full test runs SpamAssassin, rspamd, authentication, blacklists and content analysis on a real email you send.
Run a full email test