In France the post office (La Poste) did this from 2000. It did have success, in the following years a lot of people used it as their main email service. They e

In France the post office (La Poste) did this from 2000. It did have success, in the following years a lot of people used it as their main email service. They even were mandated by the government to automatically provide an account for all school students. But they couldn't keep up with more modern services. Their webmail and storage was laughable compared to Gmail and others, and people moved on. They still operate, but it's basically just for older people who never changed now. Post office companies can't compete with tech giants on email services.