Free Email Deliverability Tools
Powerful utilities to diagnose and optimize your email authentication setup. All tools are completely free and require no signup.
Available Tools
Email Authentication Checker
Check your domain authentication setup including SPF, DKIM, and DMARC records. Get an overall health score and actionable recommendations.
- SPF record validation
- DKIM selector checking
- DMARC policy analysis
- MX record verification
- Domain reputation assessment
DMARC Record Generator
Generate DMARC records tailored to your email sending strategy. Choose between monitoring, enforcement, and reporting levels.
- DMARC policy builder
- Reporting configuration
- Policy recommendations
- Copy-paste ready records
- Best practices guide
Email Header Analyzer
Analyze email headers to understand routing, authentication failures, and delivery issues. Perfect for troubleshooting deliverability problems.
- Header parsing
- SPF/DKIM/DMARC results
- Routing information
- Spam score detection
- Authentication failures
SPF Lookup Analyzer
Count your SPF DNS lookups against the RFC 10-limit. Expand includes, spot unused services, and see exactly which vendor is blowing your budget.
- DNS lookup counter (10-limit)
- Recursive include expansion
- Void & broken lookup detection
- Flatten-candidate suggestions
- Raw record breakdown
Why Use These Tools?
100% Free
No signup required, no hidden fees. Use all tools completely free.
Instant Results
Get immediate feedback and actionable recommendations within seconds.
Expert Insights
Built by email deliverability experts with 20+ years of industry experience.
Secure & Private
Your domain data is never stored. All checks are performed instantly and discarded.
Need Expert Help?
These free tools are great for self-service diagnostics. For comprehensive deliverability audits and implementation support, let's talk.
Schedule a Consultation