Haven't read the full article yet, but I'd like to note that ~20 years ago a now-defunct company tried to put to market something similar. The product name was,

Haven't read the full article yet, but I'd like to note that ~20 years ago a now-defunct company tried to put to market something similar. The product name was, IMS, "Zaplets": the idea was to have html mails with Java applets embedded, so you could for example send an email with a "poll Zaplet" that would work more or less like a Doodle poll - restricted to the email receivers. And if you were one of them, you could periodically open the original email again and see the dynamic zaplet content with all the changes that had been applied in the meantime. (I used these a bit to coordinate small stuff in a project I was working on, mostly for the novelty value). The company was soon acquired by some other bigger company, and the Zaplet concept was shelved for good. See: https://www.zdnet.com/article/a-new-kind-of-email/ https://www.zdnet.com/article/a-new-kind-of-email/