Mike Schwartz wrote:
That's only if, when you say "the message times you see" you mean
the times in the header of the current message.
But sometimes I get a message, that is a whole thread,
(and I have never seen it before, because all the old non-latest
entries were not Cc'ed to me, and I was Cc'ed for the first time
on the most recent message)
and some of the older entries have some "copies" of message
header lines in them, and the dates/times are not all in the same
time zone.

I doubt there's any way to alter messages contained within other messages,
either as attachments or in the body.
--
Brian Tillman