It seems like they could've simplified their explanations about only Swiss law applying by simply recommending Swiss users go elsewhere.
It seems like the safest way to use email is to use email operated outside your own country.
It seems like the safest way to use email is to use email operated outside your own country.
It simply means that if, lets say the US, govt makes a request, they are not obligated to comply unless they are specifically requested by the Swiss authorities.
The linked post by Proton suggests VPN and Tor usage for better anonymity.
So, to avoid this, a user would need to not be accused of a crime in a country that is on speaking terms with Switzerland.
this has been the case for a very long time. (more then 80 years in the benelux for example).