Email DNS checker
Check the DNS records behind your email sending
Review the DNS records that support correct email sending: SPF, DKIM, DMARC, and MX. CheckInbox also looks for real DKIM records across common provider selectors.
What it checks
SPF, DMARC, MX, and DKIM records across common selectors used by email platforms and sending providers.
Why it matters
Incorrect or missing DNS records can affect authentication, trust, and deliverability before a campaign is even sent.
Use it with
Use DNS before Scan and Monitoring to confirm that the domain foundation is ready for email sending.