How to select San Francisco in the fonts list?

[C64]

I'm trying to use San Francisco as the font for mail messages. The "Message list font" is set to "System Font", but I can't find that anywhere in the "All Fonts" list. Also no mention of "San Francisco". Any ideas?

 

[KALLT]

San Francisco is restricted, you can’t use it like that. However, you can swap it with a Terminal command:

defaults write -app Mail NSFont ".AppleSystemUIFont"

To change the font size:

defaults write -app Mail NSFontSize -int 12

// Edit

Hmm this does seem to affect the settings panel, but it won’t work in actual messages.

 

[C64]

Hmm.. that does seem to change "Message font" in the preferences to "System Font Regular 12", but plain text is now displayed in Times New Roman.

 

[KALLT]

I’ve tried a few other combinations with .SFNSText-Regular, -apple-system, -apple-system-body but they all fail in the message text.