New Gmail feature could mean mail from strange people
Google has announced a new feature that much more closely ties Google+ into the mix for Gmail users. The new feature allows anyone from Google+ to email you whether or not you have mailed them or given them your address.
If you are some sort of public figure or people don’t like you for some reason, I can imagine the deluge of mail coming your way. The Gmail feature appears when a user begins to type into the "To" box on the Gmail client reports TechCrunch.
You will get the normal pop ups for people who you have in contacts or have emailed before. However, you will also see people on Google+ pop up as well. The setting it apparently on by default so if this bothers you, you will need to turn it off.
There are options for stopping Google+ users from emailing you. One of the settings won't let anyone from Google+ email you, unless you email them first or give them your address. The other will allow people in your circles, one allows people in extended circles, and one will allow everyone to email you. Google does note that your email address isn't exposed to the Google+ user unless you send them an email.