Ok, thanks.
I think this is pretty lame, becouse simple formatting is so light / easy to do in different email programs, like outlook and gmail.
I managed to do underlining by usign txt instead of rtf, and with underscore the phrase in my txt file(_phrase_). So now the "higlighted" sentance is underlined in the message that is sent (atleast when read in thunderbird or gmail), used content type is text/plain.
Are these _old fashioned ways_ good / reliable or even safe way to do some simple text formatting for emails, where content is read and inserted from separeted file (txt, rtf, etc..).
Also, I noticed that when the formatting is done in gmail, the content type is set to multipart/alternative, could there perhaps be some kind of table of the tags used in this content type -coding?
-ms.buggy