alt Hacker NewsYeah, this subject comes up every couple months. The problem is not getting it working. Its that email is a captured system at this point and the real work is various reputation management processes that the big providers control or you can't send email to/from them. They also have no real interest in letting you be your own email provider so its just pushing a rock up a hill grind, for what? To save <$100 a year piggybacking on another provider as a custom domain? or just use a free provider?
Having worked at a provider, that is not the psychology at all. The #1 priority is to keep the mail flowing. #2 incremental improvements to security, spam, reputation is a distant second. The other thing is, providers already know and have people who work on email standards, work in the ecosystem, etc. So once you're inside, with people who know whats going on, know the tools, know how things work intuitively without having to read a manual, theres less desire to change.