messages left on read or unread

So, I think I've come up with an idea for a future discord update.
My idea was to have a little eye icon beside the DM that you've sent a friend to either have it closed, or open. Why? Well, I would like that feature because you get to see if your friend has seen your message or has not seen your message. Almost like a Microsoft Teams thing. Even if you vote this feature I'm still glad that you guys grant these wishes to come true for others. But,  keep up the good work!