Brief
Email deliverability problems are quiet until invoices, password resets, or onboarding messages start landing in spam.
Scanner scope
Checks SPF, DKIM, DMARC, MX, MTA-STS, and BIMI records. In plain terms, it checks whether inbox providers can trust mail sent from your domain.
Why it matters
A broken SPF record, weak DMARC policy, or expired domain mail setup can push password resets, receipts, and onboarding messages out of the inbox.
Common issues
SPF missing or too broad
DMARC policy set to none
DKIM selectors not discoverable
MX records missing or misaligned
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