Recover Disappeared Thunderbird Emails

My Thunderbird inbox suddenly emptied itself and the messages are nowhere to be found. They are not in Trash or Junk, so normal restore options are exhausted. I need someone with proven experience in Mozilla Thunderbird data recovery—especially handling lost-email scenarios—to locate and restore every missing message and put them back into my active profile (or provide them as a clean MBOX file I can import).

Details you should know:
• Issue: lost emails that vanished from the Inbox without deletion.
• Trash/Junk already checked—both are empty of the missing items.
• No corruption warning appeared; the folder simply went blank.

Preferred approach:
– Examine the existing profile folders and any hidden .msf or mbox files.
– Recover messages with minimal data loss, keeping original dates, read/unread status, and folder structure intact.
– Guide me through preventive steps once recovery is complete so this does not recur.

Deliverable: recovered emails restored into Thunderbird (or supplied as an import-ready file) plus a brief walkthrough of what was done.

If you have the toolset and know-how for deep Thunderbird mailbox recovery, let me know your proposed method and timeline.