On Mon, 19 May 2014 07:24:23 +0100 Paul <claws at thewildbeast.co.uk> wrote: > If you're creating new messages by replying to an existing one and > then changing the Subject, then don't forget to use > '/Options/Remove references' also. > Hmm... That wasn't a reply. How does it look like one? I see no indication in the headers.