Is there also a change for the European region?

I mean about the address in the letter. In Europe we have to speak with the last name and mr or mrs. if we don't know that person. look how we text in gGermanthat you can understand what i mean. Sehr geehrter Herr Mustermann, (dear Mr. Mustermann) Sehr geehrte Frau Mustermann, (dear Mrs. Mustermann) You understand what i what to say. The previous word change as well. ( geehrter for a man and geehrte for a woman) That would be great if the a chacce to change.