For 5 years, people were pestering you about giving them "your facebook".
Then came the photo era, with filters, emojis, morphing, animations, etc. With insta, and the likes.
Last years, you would have been a paria for not having a whatsapp account.
Now of course, you got the occasional signal, telegram, teams and zoom, thanks to covid.
But you know what was working in 2000, 2005, 2010, 2015 and 2020 and will work and 2025, with everybody, and everywhere ?
SMS and emails.