It would be nice to be able to create either a filter or setting that can be toggled on/off within each ticket to choose if the an email gets send to the client or not for closing a ticket. This way it can be toggled based on each ticket vs making the change/setting global affecting every client. If it was toggled do not notify the client by default it would be nice. Adding this for created tickets alerts would also be nice as some client's don't like to get alerts about every ticket.