The Mainframe network is the messaging layer for the new web. This goes beyond human-to-human messaging. There are many use-cases and applications for reliably, privately, and securely routing data packets through the Mainframe peer-to-peer network. Mainframe is resistant to censorship, surveillance, and disruption. With the exception of a catastrophic asteroid event or an aggressive alien invasion, the Mainframe network is simply unstoppable. We build with five fundamental principles as our guide.