David asked if I got a new thread...so I logged into the email package to see. NO...my "new" subject is under a thread of Yaesu FT-7100 Baofeng UV-5RA showing the hijacked message

My message appears in the same 5RA thread. I was under the impression that, though the standard called out the use of In-Reply-To, it was rarely used. Not the case here, as the mail package correctly identified the thread. I suppose that has some usefulness, because someone could preserve the thread and change the subject, providing a clue to someone of the thread content.

So ... You need to start a new message. Mike, WB4TTZ

is entirely correct. I'm glad I ran the test and got the answer to a pending question in my mind, though I didn't know how to find it. Thanks Mike! ~R~