I think you mean at the top.
A company that's come close to abolishing Reply All is the global information and measurement firm Nielsen. On its screens, the button is visible but inactive, covered with a fuzzy gray. It can be reactivated with an override function on the keyboard. Chief Information Officer Andrew Cawood explained in a memo to 35,000 employees the reason behind Nielsen's decision: eliminating "bureaucracy and inefficiency."'
I hope somebody replied to all, quoting this entire memo and putting "OK" at the bottom.