You can not just view them but you can reply to your
friends and family members without leaving Gmail. You can browse through
all notifications and see what are the new thought sharing's at your
profile. Further you can share you thoughts straight from Gmail!
Replying Google Plus Notifications Through GMAIL
Whenever someone leaves a comment at your status or post or shares something on your wall like video, image etc. then you receive a fresh notification on your Google bar that is fixed at the top of your Gmail account as shown below,Clicking the red notification count button will display the new thoughts as shown below,
Simply click a notification just like you do in Facebook and you can then read your friends comments and views and at the same time you can reply them without leaving Gmail,
Just hit the green button "Post Comment" and shoot your replies, views at your friends! That's it!
How To Share Stuff on Google+ From Gmail?
The method is exactly the same. This time click the green "Share" button on the Google bar and say your heart out! :>You can try these interesting Google + tutorials also