Here is a nifty but kind of morbid website that allows you to compose emails that will be sent to people if something were to “happen” to you.
So you draft an email, set the receiving address and then the website will send you periodical “checks” to see if you are still alive for example. If you do not respond to these checks then it will automatically send the email you composed to the intended person(s).
Not sure how useful this is to the average person. Maybe more useful for whistle-blowers etc..