Mozilla Connect

I would like to be able to use the font, font size, and line spacing in Thunderbird inbox list that I had before this last change. I am 81 years old and have been online since Arpanet and dialup modems. I never had an issue with a font used on an app...

Why do software people have to break something and call it an improvement? I hate the new font and line spacing in Thunderbird! The font is too small and if I use the keyboard to enlarge it, the spacing between lines makes the list of emails unusable...