Don’t forget Self, the type of self.

I’d still say that it’s better.

With “delete after reading”, the recipient has to delete the email manually, so the email is kept if no action is taken. But with the methods listed in the post, the content disappears unless action is taken to save it in some form.

Yes, the content can be easily saved & you should never trust that no clients are malicious, but people are forgetful & lazy. If you need the recipient to perform an action each time, there’s a good chance that they won’t.

I still understand your point. You can’t get around the analog gap unless you transmit everything directly ro the brain. And even if you could do that, with text, it’s easy to reproduce from memory.