More accurately, Denmark's postal service stops delivering post.
This is a direct consequence of the free market act from 2023 that no longer obligated PostNord to deliver post and stopped paying for the service. It is no surprise that post delivery isn't a profit market, especially in this day and age, so IMO that was a pretty stupid idea from our politicians. Now only Dao delivers post but there's nothing stopping them from saying "this island is too expensive to deliver pos to. Come pick up your shit in the mainland's ferry terminal." And trust me, we have a lot of islands for such a small country.