Prior to 10.9, the following command line command was used:
defaults write com.apple.mail MinimumHTMLFontSize 12
But at Mavericks, it doesn't seem to be working anymore.
Has anyone found another way to increase the minimum default font size for new posts? Some HTML messages come in tiny, almost unreadable font sizes.
email osx-mavericks font-size macos
Noah schubert
source share