The human-readable part of the email address (the "friendly name") can contain any
character, while the internal or "actual" address is very limited.
A posting to the unicode list a while ago has the following header lines (among
others):
From: "=?iso-2022-jp?B?GyRCJG0hOyE7ITshOxsoQiAbJEIkbSE7ITshOxsoQg==?="
<[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: All-kana documents
Date: Mon, 04 Mar 2002 18:47:44 -0500
This switches the encoding of the friendly name to ISO-2022-JP and base64-encodes
("...?B?...") the name.
The same is possible for many other email headers.
See RFC standards.
See http://www.imc.org/
markus
