dmarcian

dmarcian is an early trend-setter in DMARC-based authentication protection, co-founded by one of the original authors of the DMARC protocol. The platform provides expert guidance on email authentication (DMARC/SPF/DKIM), DNS record setup, and best practices for email security. Features include dashboard breakdowns of authentication status across domains, real-time alerts for authentication failures, subdomain monitoring with business criticality prioritization, deployment services, and professional implementation support. Free tools include DMARC, SPF, and DKIM checkers and record builders.