ProtonMail often touts its Swiss jurisdiction and privacy guarantees, but at the same time, it is complying with a record number of data request orders going through the Swiss legal system. ProtonMail is one of the most popular secure email services in the world, having launched in 2014 via a crowdfunding campaign. It promises a …
Even if your messages are encrypted, you still leak a lot of data (aka metadata)
Yes you are right. But as Michael Bazell said just expect that everything you said its going to be leak.