Do the sites that ask you to sign up using your Gmail (let's say) have access to your email?
Let’s say ’here
If you want to sign up you have to do so using your for example your Gmail account. You have to click on that icon for Gmail on their site instead of getting into your Gmail account directly on your own. So, they have access to your email? Newspapers do that often.
This question is in the General Section. Responses must be helpful and on-topic.