Who knows anything about Thunderbird? I`ve suddenly "lost" all my mails in the inbox - blank, nothing! "Sent" and "deleted" boxes are intact. New messages come in OK. Luckily, I`ve always made a point of saving important stuff but it would be nice to recover the whole lot, if possible. I`ve gone through the recommendations on the Mozilla site and they still won't come back. Some suggestions include making a new profile but that presumably means starting from scratch and I have a lot of mail accounts, RSS feeds, add-ons, etc; to re-instate, if that is the case. Anything more simple, folks?