Palace Mail is fully healthy. Here's the summary:

**All tests passed — no fixes required.**

The agent tested:
- **Layout**: All UI elements present (owner tabs, account pills, compose button, list/detail split, overlays)
- **Inbox API**: All 6 accounts returning emails (junwon-manglasabang, junwon-palace, junwon-palacering, ace-manglasabang, ace-palace, ace-palacering)
- **Message detail**: Subject, from, to, date, HTML/text body, attachments — all correct
- **Search API**: Working across multiple accounts and queries
- **Attachment download**: Returning correct binary content (HTTP 200)
- **Compose modal**: All fields present, From dropdown has all 6 accounts, Reply/Forward pre-fill logic verified
- **Owner tab switching**: Correctly resets account, clears search, reloads inbox
- **Thread mode**: Toggle and grouping logic intact
- **Push notifications**: VAPID key and subscribe endpoints responding
- **Error handling**: Proper 400/404 responses for bad params

No source files were modified.