AI-powered DNS &
Email Security Scanner
Scan DNS, email authentication, blacklists, and debug real emails with AI-powered fixes — available via API.
Everything you need for DNS security
Comprehensive analysis tools to ensure your domain is secure and properly configured
DNS Analysis
In-depth analysis of DNS configuration and optimization suggestions
- A, AAAA, MX, TXT records
- DNS propagation monitoring
- TTL optimization
Email Security
SPF, DKIM, and DMARC configuration analysis
- SPF record validation
- DKIM signature check
- DMARC policy analysis
Security Scan
Comprehensive security scan via Internet.nl
- TLS/SSL certificates
- Security headers
- DNSSEC validation
Deliverability Scoring
We analyze your actual message: spam flags, DKIM alignment, misleading headers and more — just like mail-tester, but smarter.
The first DNS tool that actually tells you why your email ended up in spam.
Blacklist Check
Check 100+ DNS blacklists instantly. Know if your IP or domain is flagged.
AI-Powered Fixes
Get exact copy-paste fixes for every issue. No more guessing.
API Access
Integrate deliverability checks into your CI/CD or monitoring stack.
DNS + Message Debug
The only tool that combines DNS analysis with actual message inspection.
What we analyze in your message
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Check Your Sender Setup NowMore Tools
Everything you need for DNS and email security
Built for modern security needs
We combine AI-powered analysis with comprehensive security checks
AI-Powered Explanations
Get clear explanations and fix recommendations powered by Claude AI
Letter Grade Scoring
Easy-to-understand A+ to F grades for your security posture
Modern & Fast
Clean interface with parallel checks for instant results