Email security · free tool
Find out what your email security looks like to attackers.
Free check for SPF, DKIM, DMARC, MTA-STS, TLS-RPT, BIMI, MX, and DNSSEC. No login required, no credit card.
We cross-check three independent resolvers (Cloudflare, Google, Quad9) so transient DNS issues don't skew your score.