If a player is on the noteblocklist, they are unable to send note messages.

/configs server1 (this will have the notemessaging status [on/off])

/set notemessaging true server1 (turns notemessaging on)

/set notemessaging false server1 (turns notemessaging off)

/get noteblocklist server1 (this will present all player names on the list)

/add noteblocklist playername server1 (will add a player to the block list)

/remove noteblocklist playername server1 (will remove a player from the block list)