Would you allow a stranger to look through your mail?
From Google’s Privacy Policy
“When you upload, submit, store, send or receive content to or through our Services, you give Google (and those we work with) a worldwide license to use, host, store, reproduce, modify, create derivative works (such as those resulting from translations, adaptations or other changes we make so that your content works better with our Services), communicate, publish, publicly perform, publicly display and distribute such content.”
“Our automated systems analyze your content (including emails) to provide you personally relevant product features, such as customized search results, tailored advertising, and spam and malware detection. This analysis occurs as the content is sent, received, and stored.”
“We collect information about your activity in our services, such as:
- Search queries and results
- Your location when you search for something
- Videos you watch
- Interactions with ads”
From Yahoo’s Privacy Policy
“Our automated systems analyze your content (including emails) to provide you personally relevant product features, such as customized search results, tailored advertising, and spam and malware detection. This analysis occurs as the content is sent, received, and stored.”
“Yahoo analyzes and stores all communications content, including email content from incoming and outgoing mail. This allows us to deliver, personalize and develop relevant features, content, advertising and Services.”