Mobile email has changed the etiquette of communication already. Even without the "Sent from my phone", people are using short replies from their cell phones and tablets. It's better for both the sender and receiver on a mobile device.
Steve Jobs was famous for his terse replies to customer emails. e.g.
customer: "Will the forthcoming iPad support tethering?"
Steve Jobs was famous for his terse replies to customer emails. e.g.
customer: "Will the forthcoming iPad support tethering?"
Jobs reply: "No"
http://www.telegraph.co.uk/technology/steve-jobs/8721493/The...