I tried doing this at work, including adding end-of-message markers to the subject line. No one got it. Now I just copy and paste the subject line into the mess

I tried doing this at work, including adding end-of-message markers to the subject line. No one got it. Now I just copy and paste the subject line into the message body. Another old-school habit no one gets anymore is subject references, e.g., 'subject: "Project X status report", body: "Fred, we need to submit subj by noon, are you done with it? Can't find it in the usual place. Bob"'