What tools did they shut down that gave more control? I am subscribed to over 200 channels at my company as well as 4-5 other community Slacks. The controls t

What tools did they shut down that gave more control? I am subscribed to over 200 channels at my company as well as 4-5 other community Slacks. The controls they provide are fully adequate to tune to my preferences (which involves minimal distraction for deep focus, while still maintaining aware of important incidents and other updates).