The tech is good. But the pushing of encryption in email services disables the use of other mail clients on free accounts (where the bridge doesn't work), while the encryption is useless when communicating with any other mail service (with email you mostly communicate with corpos anyway). It just seems like it's a cash grab, but it might be useful for activist groups.

I'm still looking for a free, private (at least as much as it can be) and open email service which is way harder than I expected.

I have a protonmail ACC (not using it as I need a powerful mail client, Infomaniak (very capitalist lately), which I also don't use much.