Forumul comunității Thunderbird

With my new monitor, I've run into a problem with the space available for the actual message. On the attached image, I'd like to completely delete the stuff circled in red. I don't use it and it takes up a lot of space. I've resized the first two columns as much as I can, but I still can't see any of my full messages unless I open them in a new window or tab, which is inconvenient.

Thanks for any help you can give me!

A couple nights ago I updated from 140.13.0esr to 140.14.1esr, then for haha's, I checked for updates again and it took the big 153.1.1esr 'Meadow' update, now it won't play the selected email notification sound that it has been playing for the last 20+ years. It will play the 'Default system sound for new email' or any other sound file in my Media folder, old ones or brand new ones I put in there, but it will not play the one that it has been playing for the past 20+ years. I delete it and add a new copy of it and it will not play that one .wav file, plays everything else, but not that one.

Hello All, I'm desperately trying to set my uninstalled and reinstalled Thunderbird to have Body Text as default. All suggestions online are outdated and don't work since suggested places in settings and account settings are not existing anymore. I have a machine at home with Thunderbird and it has Body Text as default. How on earth can I get there? Thanks