I know on the Rmail page you can see whether you've read a message or not, but I'm sure that some people get mixed up or confused about which Rmail they've actually replied to and haven't. So, I'm suggesting a third criteria - "Replied", so users can be absolutely certain about which Rmails they've replied to. I know I'm no moderator or coder, but I don't suppose I can see any problems about this addition to the Rmailing section?
Any supporters? All comments and exclusive suggestions welcome.