I am ruthless at unsubscribing from (or blocking) most emails I don't want, just to let the ones I do want get their 30 seconds in the spotlight. One pal whose predilection for forwarding chain-mail jokes really made me crazy, so I gave her a throwaway email to isolate her stuff. I sort that into the trash a couple times a month and otherwise drop her a note now and then but resolutely never respond to any of the junkmail-forwards. She asked for my mobile number once and I instantly had a vision of her sending me links to joke websites... ugh... so I told her the truth, which is that I live in a dead zone. Thanks god she's apparently unaware that one can use a mobile phone over WiFi in the boondocks.
My messaging is mostly just picking up 2FA codes or else trading hiyas with kinfolk who won't use anything else. My sibs still seem to prefer email or phone calls, although some of them had used Facebook with their grandkids until the kids migrated to 100% texting.
I would love to have been able to text with my grandma, she was a great one for just dashing off a note through the post to her grandkids away at school, and it would have been a kick to see how she adapted to conventions of messaging. She'd have been fine with it, I'm pretty sure. Always one to keep up with the latest gadgetry in the kitchen and laundry, had a list of older stuff she loathed and that included assorted manual versions of today's food processors. "If they can make a motorboat propeller, then why can't they make something with little blades sorta like that to cut up these darn turnips for my soups?" She was a gear marketer's dream model of an early adopter, that's for sure.