Is There a Setting for Indentation on Forwards and Replies?

I am pretty impressed with the email support. It does have like a bar on the side, which kind of bothers me like the forwarded message. I'm not really sure a way to clean that up though without having to run a script or what. There is a ridiculous number of options in mail mate, which I looked at initially and haven't touched for like two years because there's just too many to think about.