Fonts in Mac Mail
Hi. I have a 2019 iMac 21.5" and currently use Mac Mail as my mail client. We've recently updated our logo and we now use Museo Sans 100 as our Font. I've changed all the fonts within Mail under preferences to Museo Sans 100 12, restarted Mail but whenever I compose a new email it reverts to Museo Sans 500 12 which is a much thicker font. Why is it not doing what it's told to do and use Museo Sans 100. Fonts are installed within the Mac.
iMac 21.5", macOS 10.14