IN TB under my account, INBOX shows (8) unread messages even though they are all read. If I select all messages Marked them As UNREAD. This then shows INBOX(1292), but at bottom of window Selected = 1285 and Total = 1300 If I now select all messages and mark as Read I get INBOX(8) So why isn't Inbox = 0 and why is Total different from Selected ? Thanks Dave Application Basics Name Thunderbird Version 78.4.1 Build ID 20201104231226 Distribution ID Update Folder C:\ProgramData\Mozilla\updates\8216C80C92C4E828 Update History Update Channel release User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.1 OS Windows_NT 10.0 Application Binary C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe Profile Folder (Local drive) Build Configuration about:buildconfig Memory Use about:memory Performance about:performance Registered Service Workers about:serviceworkers Launcher Process Enabled Multiprocess Windows 0/0 Disabled Remote Processes 0 Enterprise Policies Inactive Google Location Service Key Missing Google Safebrowsing Key Missing Mozilla Location Service Key Missing Safe Mode false Profiles about:profiles Telemetry Data about:telemetry