Google goes through every Gmail that's sent or received, looking for keywords so they can target Gmail users with paid ads. And there's no way to opt out of this invasion of your privacy.
Watch the video to learn about Gmail's tactics.
Outlook.com is differentówe don't go through your email to sell ads.
Watch the Video Click Me
I use Gmail,
I'm not bothered, In my opinion its a computer diging out key words not a human reading the content for what it is.
People can sometimes expect so much for free.
That's my opinion