Can't find another way to get an event which is fired when a player receives a message from the server. AsyncPlayerChatEvent is only fired when players use chat, and ServerBroadcastEvent is only fired when a plugin broadcasts a message through the server... Neither of these achieve what I need. Anyway this shouldn't be too hard to implement, here is the proposed class layout;

 

Fields: Plugin, Player, Message

Methods: Simple getters and setters