It's impossible to continue using Thunderbird with IMAP accounts.
I have a lot o messages on my Inbox and several times it loses the sync with the server and all messages I've already read since its sync broken, are all together marked as unread. It is very (without words to describe).
Then I need to ask to repair folder and read all again and some days after it happens again. If I read the messages from my mobile app it never occurs.
