I suggest to iintroduce a separate Email address, specifically for reporting opponent moves.
RHP doesn't update board in real time, and the player has to refresh the screen periodically. Many people have now Email addresses, associated with pager or cell phone may be used for reporting opponent's move. This may be especially helpful if the player is away from computer.
Bulk Email messages from RHP that usually exceed in size max for pager/cell phone will be sent to convenmtional Email address.