I need to be able to control notifications by channel/team.
Jesse Orloff commented
It is really annoying getting "Activity" notification for every channel and team that I have favorited when anybody says anything or when the channel is mentioned. I favorite them so that they show up in the list and ar easily accessible, but I only want notifications on many of those channels when I am mentioned specifically. My activity blows up with conversations I am not concerned with causing me to ignore my activity and notifications alltogether.