I have just installed the latest version on a new laptop and have a bizarre issue where any new/unread email simply disappears after ~20 seconds. Similarly, if I read a new message it too quickly disappears as soon as the system syncs. None of these messages can be found in ANY folder, including trash. I have unchecked the “mark messages read after displaying box” Please advise
If you are using IMAP, are the missing emails still visible when viewed through your email web interface?
If they are, you could try removing the account from eM Client and then adding it again.