Mail font

Accidentally changed the default font of macOS, and was super surprised to see there’s no option to “reset to defaults”. Plus, there’s no other ways to select a “system font”.

Found the following post StackExchange - How do I choose “System Font” in the font picker? to work around. Also improvised a little bit to reset both fixed-width and message fonts. (You need to view the binary file at ~/Library/Containers/ to identify the attribute names but I’ve done the heavy lifting for you.)

defaults delete -app Mail NSFont
defaults delete -app Mail NSFixedPitchFont
defaults delete -app Mail MessageListFont
defaults delete -app Mail NSFixedPitchFontSize
defaults delete -app Mail NSFontSize

It worked.