I am investigating the source code to try to achieve below objects:Agents can be added in to the collaborators listWhen sending public reply, the ticket owner, client collaborator and agent collaborator can all get notification.Wen sending internal reply, only the assignee agent and the agent collaborator can get the notification.It sounds davideakc also wanting this.And Ntozier, is there any clear schedule to add the feature of allowing agents to "subscribe" to tickets? This seems to be a perfect solution to my objects.