If a user had sent me a ticket-worthy request, I'd forward the email to the ticket email with my code word in the body.
I agree about that goal.
However, at least in my organization, there are a few users who
hesitate to use the support system at all - they just email agents
directly. Then, as you well know, it is impossible for anyone else in
the team to participate in the support.
I thought this might be a way to encourage those users to do (from my
perspective) the right thing.
Hugh