Thunderbird Version 78.4.0 Win10 64bit Hello. I set an Master password in Thunderbird. When i start thunderbird - it asks me the password and then starts. so far - so good. If i hit "cancel" - thunderbird starts normal - showing me all the Boxes ( inbox / outbox...). i can read the mail and can send messages. When I'm doing some sending (pictures) via explorer ( send to mail recipient) - then the small Box with the question for the Master password opens - but also Thunderbirds opens a Mail and i can send that mail without typing in the master password. After that - Thunderbird opens in normal mode - showing all Boxes ( inbox / outbox...). Still there is that small little window - asking me for the master password. I thought - without the master password - thunderbird will refuse to start / work. Regards Ulf