Free Tools
Check your email
health.
Free tools to audit your DNS, validate authentication records, and plan your warmup.
SPF Checker
Validate your SPF record configuration
Launching soonDKIM Checker
Verify DKIM signing for your domain
Launching soonDMARC Checker
Analyze your DMARC policy
Launching soonDNS Audit
Full DNS health check (SPF + DKIM + DMARC + MX)
Launching soonWarmup Calculator
Plan your warmup schedule based on volume goals
Launching soonDomain Generator
AI-powered domain name suggestions for cold email
Launching soonNeed full infrastructure, not just a checkup?
Outspun handles domains, DNS, warmup, and monitoring end to end.