Latest Gmail update is not working on my Samsung Galaxy S3 I have the Gmail app installed and in the latest update it said we could reply to emails directly from the drop-down status bar without having to open the app.  I don't see any feature like this.  How do I activate it?

OS: 4.1.1
Samsung Galaxy S3
I have GMail 4.3.1 on my AT&amp;T 4.1.1 S3. I find that the Archive and Reply action buttons only appear on the new mail notification sometimes. As near as I can tell, two conditions need to be true for them to appear:


There must be only one new email. Multiple new emails will change the notification style to a list of new emails. So if you get a lot of email, you'll never see the action buttons.
There must be enough room in the notification pane to show an expanded notification without needing to scroll the notifications. So if you have a lot of ongoing notifications, you'll never see the expanded new mail notification with the two action buttons.