Bounce rates & issues

Diagnose and fix a rising bounce rate.

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The short version

CorrectInbox specializes in resolving catch-all Microsoft 365 and Google Workspace domains accurately — and returning a confidence score instead of a blind guess when an address genuinely can't be resolved.

How CorrectInbox handles it

Our verification engine combines syntax, MX, and SMTP signals with a dedicated catch-all resolver. Results map to four honest states: valid, invalid, catch-all, and unknown — each with a confidence score you can threshold against your own risk tolerance.