Sent Messages?

Hey Forums! I roughly looked through the threads here to see if this has been mentioned but I have not come across it yet so I've decided to put this suggestion up.

I just thought of something as it happens to me more often than not. When we use the in-game messaging system from one player to another, we don't get a copy of what we had sent to the other player unless the other player replies. As a result, if the other player does not reply, in a few days I sometimes forget what I previously said, or sometimes even worry if the other player received the message or not.

If we hold a conversation through PM, the subject becomes a long list of Re: Re: Re: and that's the only way we get to save a copy of what we sent out before. I was thinking maybe more of a chat/conversation stream would be good? This would enable us to actually see that the message is sent out and keep our message threads to a single player all at one place! Or if that is too drastic a change then maybe a sent messages box instead?

What do you think?