Hi DakX , I can see where you are coming from, I was just trying to figure out the circumstances or sequence of events.

If the server was restored for some reason, that would presumably reset the flags?

If someone is reading my e-mail and they open one that has already been opened, I doubt if they would set it to "unread" as that would probably alert me to what was going on?

If they can reset them to "unread" they would do that to ones that they opened first, so as not to alert me?

Of course, they could be total idiots, or are just doing it to pull his chain?

It is the resetting of opened messages to "unread" that I am having difficulty with. Not the "how" but the "why"?