Hello there petraprins 1968. We have read your message. We try to help you. The sent emails folder shows your emails but in strange numbers and characters as i understand it? what kind of repair did you do on it? Can you go to the Thunderbird settings? Menu > Options > General > Language & Appearance > Advanced button > Text encoding Check if the settings are Unicode-UTF8? You can try to refresh the map you like to refresh. Click the Refresh button. Close the folder list window. Click the little triangle at the top level of the account in the folder tree to hide the folder list. Click it again to show the folder list. If it s been worse then that? Try to rebuild Thunderbird index system. Quit Thunderbird. Locate the global-messages-db. sqlite file in your Thunderbird Profile. Delete the global-messages-db. sqlite file. Start Thunderbird. The re-indexing process will start automatically. Greetings Firefox volunteer.