554 30
554.30 Disabled Mailbox
Delivery failed because the Yahoo mailbox is disabled or dormant.
Yahoo deactivates mailboxes after long periods of inactivity. Repeated attempts imply poor list hygiene and can hurt future inboxing.
Severity
ERROR
Provider
Yahoo Mail
Last Reviewed
2025-06-01
How to Fix 554 30
Follow these steps to resolve this Yahoo Mail SMTP error and restore normal delivery.
- ✓Suppress addresses that bounce with 554.30 and launch a reactivation workflow.
- ✓Run regular engagement sweeps to remove dormant Yahoo accounts.
- ✓Use validation services on legacy lists before periodic sends.
- ✓Monitor inactivity trends so they do not impact major launches.
Helpful Resources
More Yahoo Mail SMTP Codes
Keep these related troubleshooting guides handy while addressing 554 30.
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