So far my messages, written in Windows Live Mail 2012, have not had the 
extra MIME information. But maybe if I try to bold some text, it will have 
to be sent in a different format that requires this type of encoding.
I didn't succeed in bolding anything, so instead I have switched this 
message to UTF-8 encoding instead of Western European ISO encoding. I'm 
pretty sure that if I wrote some stuff in Word and then pasted it into a 
message like this, I would get weird characters. I'm only going to use this 
encoding for this message. This has been a perennial sore point on this 
listserv over the years.
73,
Lloyd Rasmussen, Kensington, MD
http://lras.home.sprynet.com