Man, you’re giving me flashbacks to real analysis. Shit is weird. Like the set of all integers is the same size as the set of all positive integers. The set of all fractions, including whole numbers, aka integers, is the same size as the set of all integers. The set of all real numbers (all numbers including factions and irrational numbers like pi) is the same size as the set of all real numbers between 0 and 1. The proofs make perfect sense, but the conclusions are maddening.
Man, I wish self hosted email was a reasonable thing to do. But it’s a pain to set up the server and the domain stuff, and once you do, if anyone ever spammed off that IP, you’re probably screwed anyway because good luck getting off the blacklists.