> If it is purely private and non-commercial you don't have to.
Unfortunately, this does not include a lot of websites that most people would classify as private. For example, a blog still needs an Impressum.
In addition, you will even be classified as commercial, and therefore require an Impressum, if you don't make any money, for example if you use ads to (try to) pay the hosting cost.
> A P.O. box is not required
In fact, you'll have to pay a fine of usually 5000€ if you use a P.O. box without a summonable address.
Unfortunately, this does not include a lot of websites that most people would classify as private. For example, a blog still needs an Impressum.
In addition, you will even be classified as commercial, and therefore require an Impressum, if you don't make any money, for example if you use ads to (try to) pay the hosting cost.
> A P.O. box is not required
In fact, you'll have to pay a fine of usually 5000€ if you use a P.O. box without a summonable address.