Google has pushed an update to their Google Plus and Gmail platforms.
The new feature would let you circle people from the Plus notification mails right within Gmail.
The mail message would feature the Add to Circle button. We assume this feature would not work in desktop clients and other webmail services.
We’ve made a small tweak that improves Circle notification messages in Gmail. From now on whenever someone adds you to a circle, you can add them back right from the Google+ notification email. Just mouse-over the “Add to Circle” button and pick the circles you want, or create a new circle. The button will show you if this person is already in your circles. Check it out and let us know what you think.