Denmark is one of the most digitized countries in the world. MitID and Digital Post are the cornerstones of the digital Denmark.
MitID is your personal secure digital login.
Almost all post from public authorities in Denmark is sent digitally. It is called Digital Post. You may also choose to receive your post from e.g. your power supplier, your insurance company, etc. as digital post. You receive digital post once you have a CPR number.