Chat feedback

I don't know if it is technically doable or not.
What i think would be a huge improvement in chat system is not to lose the private chat message if you crash/disconnect and relog in less than like 5 minutes. Right now the trades are destroyed coz people whispers 10 different persons in the same time in order to buy a thing, then you answer telling to wait 5 minutes coz you are in map/lab/apex (and maybe they are even willing to wait for gettin that thing cheaper), but then you crash and you can't recontact those people who eventually will buy the item from another one that has the same thing but for a bit more expensive price.
Another solution is to remember with an automessage to the player who has disconnected and relogged in less than 5 minutes the name of the players with whom he have had a private conversation.