Questo fa da server di posta locale (invio e ricezione) e invece che usare #TCP usa una rete #P2P over #IPv6 #mesh (Yggdrasil - https://github.com/yggdrasil-network/yggdrasil-go)

#Yggdrasil is an early-stage implementation of a fully end-to-end encrypted IPv6 network. It is lightweight, self-arranging, supported on multiple platforms.