Email inbox "Reply arrow" indicator

[PeltFrelken]

Why doesn't the email app (when you're looking at the inbox) show a little Reply arrow next to messages that you've previously replied to? [Moto X user]

 

[patruns]

Most apps don't. Why would you ask? Is it because the iPhone does?

 

[PeltFrelken]

Just good to review the inbox and be reminded if a message has been replied to already.