I completely understand now!
I think that only way around this would be to match if the agent and contact emails are the same to default to notes (uncheck the box)? I can't see this being a huge issue to add..
-
As a wider discussion on ticketing and replies..
I did see a design for the ticket reply box that separated out the reply/notes modal as kind of tabs but we never got the code actually working.
I've also got ideas to scrap the public reply box altogether and have a pop out mini email client that allows you to adjust the To, CC, Subject and Message text. Notes would just then be notes.
I've also used ServiceNow previously where we had the ability to add both internal and public/client visible notes ("additional comments"), but these didn't trigger email updates (you could still send emails though if required). I guess that's exactly your use case - transparent notes for auditing, without annoying emails?