In the countries I’ve been, people use all sorts of apps and each person is very shocked when you don’t have “the app” that everyone is using. And of course the fashions change over time, so app X is popular for a few years, then it’s app Y. It’s impossible to keep up with all these trends.
Mostly people are able to email, even if it’s a bit unusual, and perhaps, like you say, mostly a work thing.