Essentially, I'm looking for self-destructing messages. I grab a link, I send it to a family member, they read the information, it's gone after they read it, and all they need to have to interact with it is the original link to the url.

Are there any foss solutions by which to just type out a message, send a link to someone and have it be deleted after they read it?

I'm aware that Nextcloud has the ability to share links to users who don't have accounts for temporary spans of time, that's... similar, but I don't believe it can instantly disable after the first visit.