Free tools · No signup required
Free email deliverability tools
Check any domain's email setup in seconds — SPF, DKIM, DMARC, sender reputation, and more. Every tool runs the same deep check and tells you, in plain English, what's broken and exactly how to fix it.
These tools read public DNS records and are intended for domains you own or manage. Please don't use them for unauthorized reconnaissance.
Email Deliverability Checker
Check SPF, DKIM, DMARC, blacklists and MX in one go.
SPF Checker
Validate SPF and catch the 10-lookup PermError trap.
DKIM Checker
Verify DKIM signing on the right provider selector.
DMARC Checker
Check DMARC policy strength and the duplicate-record trap.
Blacklist Check
See if your sending IP is on major email blacklists.
Email Deliverability Test
Run a full inbox-readiness test and get one clear verdict.
SPF Record Generator
Build a valid SPF record from your sending sources.
DMARC Record Generator
Build a DMARC record with the right policy and reports.