[zeronine]

I feel like this is just capialising on people's privacy and security fears.

Helm provides an offsite backup anyway, so why not just use a NextCloud provider + Cryptomator?

And email is a nightmare to self host and maintain, especially for a primary address. If you need real secure communication just use something other than email.

[msh]

There is a quite good review here: https://theintercept.com/2019/04/30/helm-email-server/

That also explains why you might want it.