My family has a signal group. I started it two years ago.

Almost no one pays any attention to it, unless they accidentally open the app once a month, but they’re all still there and can be spoken to.

I put a PSA out a month ago that I’ll no longer respond on Facebook Messenger or SMS after the turn of the year. Tough shit. There was some groaning but, if there’s no other way, either use Signal or invest in a Pigeon coop and get training.