@JS
>>>I think if your reply via the web interface, rather than your email program<<<
My experience is that once the OM is posted, the checkbox is no longer available for follow up messages posted by the Mod.?
@BB
It appears that the only diffs/a SM is that the prefix [Special] is appended to the email Subject (but is scrubbed from and does not appear on the web UI Topic. ?
I see benefit to having that #tag since it seems that it should persist in the Topic text.?
I wonder if a SM could be sent via email (as either an original Topic or a follow-up post) if the [prefix] is included in the Subject line???
KWKloeber