The Dutch government has one approach to the email service issue, by having a website and app, Berichtenbox, where you can receive official communications. They're regularly extending it to include municipalities as well.
However it's one-way only at the moment, there's no way to use it for two-way communication.
It also requires either a phone or computer that’s increasingly owned by private corporations. The only OS that doesn’t restrict what I can do with it is Linux.
However it's one-way only at the moment, there's no way to use it for two-way communication.