Free tools
Free email deliverability tools
Check the DNS records that decide whether your email reaches the inbox. No signup, and every lookup runs in your browser.
SPF Checker
Validate a domain’s SPF record, count its DNS lookups and see which senders it authorizes.
- Single, valid record
- 10-lookup limit, includes followed
- all policy strength
DKIM & DMARC Checker
Check a domain’s DMARC policy and its DKIM keys — find the selector automatically if you don’t know it.
- DMARC policy and reporting
- DKIM key and key size
- Common selectors discovered
MX Lookup
Look up the mail servers (MX records) that receive email for any domain.
- Every MX record
- Priority order
- Missing-record warning
Skip the DNS homework
Add a domain to MailCraft and we generate its DKIM and DMARC records for you, then check when they're live.
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