I see lots and lots of complaints but NO suitable answer! Most answers don't even answer the question but instead tell how to increase MESSAGE font size - not the main screen "message list". Suggestions to change screen resolution are common but are ludicrous. One would have to change resolution every time they went in or out of Thunderbird! CTRL+ is also suggested but does not work on the message list. Creating and inserting CSS into the profile is a ridiculous suggestion for most users.

Why is there no user friendly setting provided for text size on this screen?