I despair of Thunderbird developers ever getting this right! It used to be okay, in TB 3.x, but somewhere along the way, it went badly awry.
Plain-text messages should never sprawl all the way across the width of the display window. Anything with a line length of more than 72 characters is generally uncomfortable to read; a maximum of 65 characters is, perhaps better, yet TB insists on giving me eye-strain, by refusing to wrap text at a sensible line length.
Prior to the upgrade to TB 91.1.1, I could tweak various “wrap” related settings in the TB “Config Editor”, to override this evil default TB misbehaviour; tonight, after the upgrade to 91.1.1, I sent a message to a project mailing list, and received back a copy which completely ignores my “wrap” setting tweaks, (which do seem to have been preserved through the upgrade); the message has become effectively unreadable.
Short of finding an alternative MUA, which doesn’t exhibit such malign behaviour, or composing properly wrapped — with hard line breaks — messages, in an external editor, can anyone suggest a workaround for this TB misbehaviour?