I am using Alpine with a local IMAP server. For some messages, I get the following "advisory message" in Alpine:
***********************************************************
* What follows is an advisory message. After reading it *
* simply hit "Return" to continue your Alpine session. *
* *
* To review this message later, press 'J' from the *
* MAIN MENU. *
***********************************************************
Alert received while accessing "{localhost:993/imap/notls/ssl/novalidate-cert/user="ca>
Message 291 appears to be a Unicode message and your E-mail reader
did not enable Unicode support. Please use an E-mail reader that
supports IMAP with UTF-8 (see
https://tools.ietf.org/html/rfc6855.html)
After dismissing this message, I can look at message 291, and see some non-ASCII characters in the From: field, in the Subject:, and in the mail body itself; my combination of Alpine and terminal program has no problem displaying those characters.
What do I need to set in Alpine to let the IMAP server know that it is perfectly capable of handling messages containing UTF-8 in header values, and to avoid this kind of advisory messages?
For what it's worth, the Display Character Set setting of Alpine in the setup menu is set to UTF-8.
