Hello

After a Thunderbird update today all the emails in my inbox suddenly disappeared, and I was left with the message saying that the inbox was empty! Hundreds of emails - among them quite a few very important ones - were simply gone! What do I do??? What has happened and how do I retrieve the missing messages? The funny thing is that it's only the inbox that has been emptied. The emails that my filters have sent to my alias-boxes are still there. I need my emails. Where have they gone??