I found some information about setting the outgoing message priority.
From: http://dev.mutt.org/trac/wiki/MuttFaq/Header
I found:
How can I change "Message Priority" for outgoing mails?
How can I add something like "Low, Normal, Medium, High" priority to a mail
right before sending?
This is usually done through a <tt>Priority:</tt> header, although it is not
a standard header. It is up to the MUA whether it supports it or not. If
the receiving MUA does not support it, it will not be displayed to the
receiver. Mutt allows you to setup <tt>macros</tt>, various -hooks, and
<tt>my_hdr</tt> to add the header to a message.
I'm afraid I really don't understand this though. What are
<tt>macros</tt>? If I understood at least partially correctly, using this
macro I can write a priority level to the header. Although this is a
non-standard header and the recipient may or may not see it depending on
the receiving MUA. Is that correct?
--
Thank you,
John