We are all cultured.
All of us come from a background where there are rules on how to talk, how to dress, how to see the world etc.
Knowing these things allows us to communicate more effectively to someone from another culture.
Here is an example – When an American says how are you doing, it’s flippant, almost directly following hello as a courtesy. In Europe, this is seen as a no-no, as how are you is a very personal question.
Think about that before you engage in long form communication (more than just a hello), what is the culture, how can you learn more about it? It can save you the hassle.
You don’t want to over communicate in a bad way.