Recently my Thunderbird email account seems to have emails disappearing out of my inbox. I have used Thunderbird for several years and this only started happening recently. Cannot find them anywhere in any archive, etc. There are so many things that need to be checked to make sure the account is not set up to autodelete or autoarchive, can someone summarize exactly what settings I need to make sure are correct? I just want to be able to go back and search through all emails I have received.