I think that too many emails can be a waste of time. I work with some great motivating individuals. However, they send too many emails. I think that not everything needs to be said when thought of and emails can sometimes be a avenue for some to purge their thoughts. Instead taking note of thoughts, ideas and concerns to then be later discussed in the many meetings that are scheduled within the management team is a more effective use of everyones time. This is one of many reasons meetings are scheduled to discuss specific goals and topics from an agenda. When you organize yourself to hold on to the thoughts to be discussed in a scheduled appropriate setting then emails can be minimized and everyone involved can be apart of the discussion synchronously. I also think that within a department reminder emails should be designated by one person to minimize mulitple emails to the same individuals. Your direct reports stop the communication lines when too many emails can be overwhelming and take too much time.