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BIGBIGTOOLS / Email tools

Email DNS checker

Enter a domain and DKIM selector to query MX, SPF, DKIM and DMARC or draft SPF and DMARC records.

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About this tool

Enter a domain and DKIM selector to query MX, SPF, DKIM and DMARC or draft SPF and DMARC records. Review the result for your task before using it elsewhere. Queries send the domain and selector to Cloudflare DNS. Drafts do not change DNS or verify DKIM signatures and SPF lookup limits.

Frequently asked questions

How do I use this tool?
Enter a domain and DKIM selector to query MX, SPF, DKIM and DMARC or draft SPF and DMARC records. Review the result for your task before using it elsewhere.
What limitations should I check first?
Queries send the domain and selector to Cloudflare DNS. Drafts do not change DNS or verify DKIM signatures and SPF lookup limits.

DNS queries require network access. Generating example addresses does not create real mailboxes.