How long did it take for the traditional post office to die? It didn't die even after the arrival of FedEx or DHLs. Email is a basic and all inclusive communic

How long did it take for the traditional post office to die? It didn't die even after the arrival of FedEx or DHLs. Email is a basic and all inclusive communication method. People later on have added and tagged along their businesses to ride on the same method. Those who are facebooking, tweetering, chatting, texting, etc, are still communicating on the same basic principle which binds the email. However, headlines like "email will never die" or "email is dead" are as stupid as they can be.