Ask HN: What are today's End to End encryption solutions for non tech people?

Non tech people ask me what should they use for their communications in terms of security and I find myself mumbling pgp, follow this 40-step guide, explain public / private keys... It doesn't really work.

How far have we progressed on this? What solutions are there today for secure end-to-end ubiquitous communication to supplement or at cases even replace email.

I'm talking about a primarily Desktop solution, chat will not do, so products like WhatsApp and Wire don't count... Likewise, mobile messengers will not work on an operational capacity for a company / entity. I've seen a few ad-hoc services here and there, is any of them well established? Do you trust them?

Let's try to not get consumed on the subject of communications security itself, but try to think, how would you respond to similar questions from non-tech people? You need to give a straight answer they will understand, follow, and will be satisfactory secure, what would that answer be?