Unicode Support in Message Bodies
As with all encodings apart from US-ASCII, when using Unicode text in email, MIME must be used to specify that a Unicode transformation format is being used for the text. To use Unicode in email headers, the Unicode text has to be encoded using a MIME "Encoded-Word" with a Unicode encoding as the charset.
UTF-7, although sometimes considered deprecated, has an advantage over other Unicode encodings in that it does not require a transfer encoding to fit within the seven-bit limits of many legacy Internet mail servers. On the other hand, UTF-16 must be transfer encoded to fit SMTP data format. Although not strictly required, UTF-8 is usually also transfer encoded to avoid problems across seven-bit mail servers. MIME transfer encoding of UTF-8 makes it either unreadable as a plain text (in the case of base64) or, for some languages and types of text, heavily size inefficient (in the case of quoted-printable).
Some document formats, such as HTML, PostScript and Rich Text Format have their own 7-bit encoding schemes for non-ASCII characters and can thus be sent without using any special email encodings. E.g. HTML email can use HTML entities to use characters from anywhere in Unicode even if the HTML source text for the email is in a legacy encoding (e.g. 7-bit ASCII). For details of this see Unicode and HTML. The rest of this article deals with email messages where the actual raw text (whether markup or plain text) is in an encoding that covers the whole of Unicode.
Read more about this topic: Unicode And Email
Famous quotes containing the words support, message and/or bodies:
“I concluded that I was skilled, however poorly, at only one thing: marriage. And so I set about the business of selling myself and two children to some unsuspecting man who might think me a desirable second-hand mate, a man of good means and disposition willing to support another mans children in some semblance of the style to which they were accustomed. My heart was not in the chase, but I was tired and there was no alternative. I could not afford freedom.”
—Barbara Howar (b. 1934)
“What the hell is nostalgia doing in a science-fiction film? With the whole universe and all the future to play in, Lucas took his marvelous toys and crawled under the fringed cloth on the parlor table, back into a nice safe hideyhole, along with Flash Gordon and the Cowardly Lion and Luck Skywalker and the Flying Aces and the Hitler Jugend. If theres a message there, I dont think I want to hear it.”
—Ursula K. Le Guin (b. 1929)
“Remember all those renowned generations,
They left their bodies to fatten the wolves,
They left their homesteads to fatten the foxes,
Fled to far countries, or sheltered themselves
In cavern, crevice or hole,
Defending Irelands soul.”
—William Butler Yeats (18651939)