I'm trying out v5.04 and will have users with different native languages (English, Chinese, Korean, Japanese, German, and Spanish.)
Sending out emails defaults to utf-8 encoding. For example, the mail header that the recipient receives from my zimbra server shows:
Content-type: text/plain; charset="utf-8"
How can each user change their default outgoing emails to be encoded in, say Shift-JIS, instead of utf-8?