For all comments, email notifications need to be sent to all assigned to that task.
For all comments, email notifications need to be sent to all assigned to that task. That is the main use of Planner. If team members have completed their task; they can remove themselves from the assigned list, to stop the unwanted emails.
To me, this is must have feature, no? When you assigned task to team. It means you added them to the loop, so all communication should be notified to them.
Agree, either let us @mention users to send notifications specifically to them or, like Trello does it, @card for all users on the card, or let us manually pick users to send a notification to.