Proton kind of gets around this, they've got a service you can use to send encrypted emails externally and also get replies to them securely as well - https://p

Proton kind of gets around this, they've got a service you can use to send encrypted emails externally and also get replies to them securely as well - https://protonmail.com/support/knowledge-base/encrypt-for-outside-users/ https://protonmail.com/support/knowledge-base/encrypt-for-ou... No idea how good it is, or if it does what it says on the box though.