Hello, We are currently massively using notification messages from OTRS (the ones that are set in Admin area / notifications). I found that the automatic sending different messages are controlled in these menus (tell me if I'm wrong) : Client:OwnerUpdate : In the Queue menu, setting "Customer OwnerNotify: " Client:QueueUpdate : In the Queue menu, setting "Customer Move Notify: " Client:StateUpdate : In the Queue menu, setting "Customer State Notify: " Agent:AddNote : (?) Agent:Escalation : (?) Agent:FollowUp : In the user preferences, Follow up notification item Agent:LockTimeOut : In the user preferences, Ticket lock timeout notification item Agent:Move : In the user preferences, Move notification item Agent:NewTicket : In the user preferences, New ticket notification item Agent:OwnerUpdate : In the Queue menu, setting "Customer OwnerNotify: " Agent:PendingReminder : (?) So, it seems that the same parameter (Queue menu, setting "Customer OwnerNotify") is used for notifying both clients and agents. But, in my case, I do not want clients to be notified of a OwnerUpdate. How can I do it ? is there a config parameter holding that or any other solution ? Thanks a lot for your help. Greetings Léonard Wauters.