Just yesterday, I got my 90yo mother onboard DeltaChat, joining the rest of my family (we all switched over from Signal a few months back)
She lives alone, independently, and has used email for 2+/day wellness checks for decades.
I quipped “technically, it’s still email” as she opened up the app. You could see the gears turning in her head.
“So… there’s no spam?”
“Cryptographically impossible” I assured her.