Gmail has started rolling out new integration feature that allows any Google+ users to send you email even if they do not know your email address. When composing an email, Gmail will suggest people in your Google connections as recipients, these are people outside of your address book.
Your email address is not visible to the Google+ recipient unless you send that email, and likewise, the recipient’s email address isn’t visible to you unless the recipient send you an email.
Your email address isn’t visible to a Google+ connection unless you send that person an email, and likewise, that person’s email address isn’t visible to you unless they send you an email.
Here is how an email from a stranger will look like:
Google has received negative press for this feature. This essentially is shoving Google+ down the throats of Gmail users. The worst part is this feature is opt-in by default with the setting that allows anyone on Google+ to send you email.
Google said “You’re in control” and allows you to control via settings who in Google+ can send you email. Google is rolling out this feature over the next couple of days and will email you a direct link to this setting.
To opt-out, sign-in to Gmail on the desktop and go to the “General” tab of settings. Look for “Email via Google+”. Select “No one” from the drop down list and remember to click the “Save Changes” button.