gmail: how to block email sending from google+ circle
DESCRIPTION
To provide more social experience Google has made easier for users to send email messages to several other users without knowing email addresses. This is useful in some cases it can be a nuisance for several as spam messages reach inboxes. This feature can be disabled. Now a recent change had made it possible for anyone to send you an email from Gmail as you would be a suggested recipient in the recipient field.TRANSCRIPT
How Can You Prevent Google+ Users from Emailing You?
Sign in Your Gmail Account
Click the Gear Button
Click “Settings”
In General Section, go to “Email via Google+”
Go right and click down arrow and choose “No one”
Click “Save Changes”
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