I don't care about whether information is transferred via hard copy. The courier idea is fine, but focusing on it, mentioning it in the first place is silly. Email is just a mode of communicating, but the really damaging information is still on a computer. So if you truly believe as Trump has said that "no computer is safe," it stands to reason that you wouldn't use computers at all. If that's what the Trump Administration intends to do, you can forget about America being first, but in accordance with Trump's campaign promise, America will be very much like it was in the old days when presumably Trump thinks it was great.
Trump's statement that "I don't care what they say, no computer is safe" is disturbing to me not because Trump believes no computer is safe, but because he doesn't care what "they" say, "they" presumably being cybersecurity experts who know what is safe and what is not safe regarding computer usage. Trump is not a cybersecurity expert, and the fact that he does not care what people who are say on the matter reinforces what I have long thought about the man: he' s an arrogant son of a bitch who thinks he is infallible and right no matter how inexpert he is on a topic.