We’ve worked on email infrastructure for multiple clients at Axon, and everything in this write-up checks out. Most startups just build wrappers around Postfix

We’ve worked on email infrastructure for multiple clients at Axon, and everything in this write-up checks out. Most startups just build wrappers around Postfix or SES and call it innovation. The hard problems, such as spam filtering, deliverability, and auth protocols, never get touched. That’s why 80% fail.