When you run a hosting company like Mynymbox, it is super hard with abuse for example. Keys I do really believe this would offer a wider gate for shitheads. imagine just have a key, spin up a VPS In seconds and run a nice bot net. We have thousands of customers, tons of privacy ppl, great customers with great projects, important projects. We have some kind of responsibility. So even if I got the point with key logins, this may be a risk for other customers because of super growing abuse and this may lead to take downs of infrastructure.

I just explain you guys the reasons for us to not implement it and our thinking about that key system. Of course it makes sense for VPNs or services like eSim where you do not really can loose something except a number or connections.

Fully understand your reasons bro In fact it is not worthy for you. It's just an additional source of headache with little or no apparent benefit. Hopefully some day in future we will move to a more decentralized and private service than email.

Email is decentralized, everyone can spin up an email server. How private you use it depends on you, you can use PGP.