What's revolutionary is that mox implements the entire stack itself as tightly coupled monolith. With mailu and everything else you get a gargantuan stack of h

What's revolutionary is that mox implements the entire stack itself as tightly coupled monolith. With mailu and everything else you get a gargantuan stack of half a dozen massive, enterprise scale servers that are held together with duct tape and prayers. They can scale out to hundreds of thousands of users, but if anything breaks they expect there to be dedicated sysadmin staff to fix it, and gluing leaky abstractions on top doesn't really solve these fundamental architectural challenges.