Apple mail font changes with mail encoding
Apple mail will change the font automatically with the encoding of the message.
This might not be shown on Apple Mail, but it does when recieved in Microsoft Ouotlook / Windows.
When I send in Western Latin 1. font is Calibri
Switch the mail encoding to UTF-8, Font becomes Times new roman.
if mail encoding is DBCS like Big-5, it start to switch the big-5 default font on Windows and it's ugly.
This is serious, the change of fonts is very unprofessional.
And we can't ask everyone in the world ot switch to Apple mail, most of working system are still in Outlook...
MacBook Pro with Retina display, OS X Mountain Lion (10.8.4)