Google has a new feature where people can send you an email even if they don't know your email address. But there is a way to opt out.

The new feature marries Gmail and Google+. So if you're in someone's Google+ Circles, they can contact you -- regardless of whether you've ever exchanged email addresses or not.

It's something that I liken to this: Let's say somebody goes to the post office and mails you a letter that just has your name. They don't include a street address, your town, your state, or your zip code. But the amazing thing is, the letter gets to you.

That's basically what Google is doing now.

There are a variety of reasons why people might *not* just want someone emailing them out of the blue. Fortunately, it's not that hard to change your Google Mail settings to opt out. Just follow these instructions.

Meanwhile, I told you before the holidays that Google also wants to use your image and name in ads without compensating you. But again, there's a way to opt out of this too.

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Clark Howard is a consumer expert whose goal is to help you keep more of the money you make. His national radio show and website show you ways to save more, spend less and avoid getting ripped off. View More Articles

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