Palace Mail is fully healthy. Complete test results:

**All 6 accounts working:**
| Account | Inbox |
|---|---|
| junwon-manglasabang | 1 msg |
| junwon-palace | 1 msg |
| junwon-palacering | 2 msgs |
| ace-manglasabang | 14 msgs |
| ace-palace | 6 msgs |
| ace-palacering | 2 msgs |

**All features verified:**
- Layout: header, owner tabs (Junwon/Ace), account domain pills, split list/detail pane
- Inbox and Sent folder APIs returning correct data
- Message detail API (subject, from, date, body, attachments)
- Search API (subject/body/from/to search, pagination)
- Attachment download
- Compose sheet (To, Subject, Body, From dropdown with all 6 addresses)
- Error handling for unknown accounts / missing messages
- Thread mode toggle with localStorage persistence
- VAPID push subscription endpoint

No fixes needed.