Google's updated its terms of service in an effort to be a bit more transparent about its email-scanning practices. And whether you're harbouring a deep dark secret in your Gmail sub-folders or otherwise, it inevitably comes down to one thing -- making you more valuable to advertisers.
"Our automated systems analyse your content (including emails) to provide you personally relevant product features, such as customised search results, tailored advertising, and spam and malware detection," reads the updated terms. "This analysis occurs as the content is sent, received, and when it is stored."
A necessary evil to make peace with if you wish to continue using Google's free services then. At least it's just algorithm-running robots rifling through your emails, unlikely to have much interest in your illicit love life. [Google]