Google Email Quick Tip
"Personal Level Indicators" put arrows next to messages. A single arrow (>) indicates a message was sent to you and others. A double arrow (>>) indicates email was sent just to you.
Here is how to turn it on through email settings!
Avoid email gaffes with Undo Send.Oops, hit "Send" too soon? Give yourself a grace period of a few seconds to cancel sending, then edit your message before sending again. Turn it on in Labs
See which messages were sent right to you."Personal level indicators" put arrows next to messages. A single arrow (›) is for emails sent to both you and others and double arrows (») indicate emails sent just to you. Turn on personal level indicators