Problems:

- E-mail is insecure. It can be read by any number of servers between you and the sender.

- Numerically, very few healthcare companies have the time, money, or talent to self-host a secure solution, so they farm it out to a third-party that offers specific guarantees, and very few of those permit self-hosting or even custom domains because that's a risk to them.

As someone who works in healthcare, I can say that if you invent a better system and you'll make millions.

Millions please. The solution is to just link to the fucking thing instead of a cryptic tracking url from your mass mailing provider. But oh no, now you can’t see line go up anymore!!!

You really haven't thought this through. It has nothing to do with "line goes up" nonsense.

You... want your private health information available on the open internet?

pgp exists, and most email clients that anyone would use support it well enough to work even for relatively tech-illiterate users