Gmail introduced a new feature this week that might help some with their business marketing. You’ll now be able to email your Google + connections. Check out the update:
Gmail update: Reach more people you know
Ever wanted to email someone you know, but haven’t yet exchanged email addresses? Starting this week, when you’re composing a new email, Gmail will suggest your Google+ connections as recipients, even if you haven’t exchanged email addresses yet.
How it works with email addresses
Emailing Google+ connections works a bit differently to protect the privacy of email addresses. Your email address isn’t visible to your Google+ connections until you send them an email, and their email addresses are not visible to you until they respond.
Receiving email from people outside your circles
If you receive an email from someone outside your circles, it will be filtered into the Social category of the inbox (if enabled) and only after you respond or add them to your circles, can they start another conversation with you.