From AUSTRIA about AUSTRIA

“In German speaking countries, you address someone formally by saying “Sie”, and by applying the last name. This causes sometimes confusions, especially in emails (Austrians then write “Dear Mr. Prof. Dr….”, although this sounds very strange for foreigners. Otherwise, Austrians might feel upset if they are only addressed by their first name without using academic titles); especially in communicating with old people you have to take care of this”.