What if emails are accepted but not visible?

Diagnosing invisible delivered emails:

Possible locations:

Spam folder

Quarantine

Other tab (Promotions, Updates)

Silently discarded post-acceptance

Diagnosis:

Seed testing to check placement

Ask real recipients to check spam

Use panel data services

Review engagement metrics by provider

Silent filtering:

Accepted but filtered to spam

No bounce, but no inbox

Common with reputation issues

Resolution:

Same as reputation recovery

Rebuild trust through engagement

Send to engaged users to rebuild

Cargo accepted at the dock but never reaching the warehouse. Check internal routing.