Finding how to do certain things in WIN 11 is difficult. I discovered how to set the font in Outlook by accident. Try as I might, I went into all the properties in OUTLOOK to no avail, however, I discovered how to set the font to stay permanently set. When I was in XCEL, I wanted to set the font for a file to be what I wanted everytime I opened a certain file. I set the font and then a window opens up telling me to exit if I wanted the changes to be permanently set. I did this and sure enough, it worked when I opened my file again. I thought, “hey, maybe it will work for Outlook”, so I tried and PRESTO!, It worked there as well! If this is confusing, let me know and I will try to explain in more detail. Hope this helps someone else.