The integration of Google+ into Gmail continues. Today, Google announced it has added interactive email notifications for Google+ Events invitations, so you can RSVP, invite and comment from the inbox.
Google's Roshni Malani says you can RSVP with one click, invite your friends, read and respond to comments and share photos "all without leaving your desktop inbox."
According to the most recently released numbers from Google, Gmail has 425 million unique users a month. Google declared earlier this month that Google+ has topped 100 million monthly active users.