My suggestion is: To add a command /busy <text> this will allow people that are busy IG and they can't reply to any SMSs so the person that texts them will be told that this player is busy for whatever reason. For example CB's hosting activity so he/she will do /busy Hosting activity.
This will also help CIT Staff's that are busy IG for not getting their PMs spammed as most of us know they still receive messages even if they lock them so this will be useful.
