Snapshot of email message in GMAIL

While I was checking my mails in GMAIL,I found this interesting thing(May be I'm the last one to see this) which I want to share with my readers.

I was trying to open a message in a new tab,so I did a right click on my message. Instead of a drop down list,I got the snapshot of my message. It's really a good future which saved my time in opening the message in a new tab.

RIght click on the message while give us a snapshot of the email.