Wie kann ich den font wechseln bei Thunderbird?

edit

If you want to increase the font in everything then do this:

Menu app icon > Options/Preferences > General Scroll down to the very bottom click on 'Config Editor' button to open 'about:config' Accept the risk.

In search type: pixels Look for this line: layout.css.devPixelsPerPx Double left click on that line to open the 'Enter string Value' box so you can edit the Value.

The default value will be a negative number: -1.0

Enter a new positive number eg: 1.25 or 1.5 or 2.0 or 2.2 click on OK