Look what came in the mail! https://t.co/nyV1xP3xXU
Yale-NUS College
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DOVER
ChIJVe35zfQa2jER94lewK4Y_4E
['look', 'came', 'mail', 'https://t.co/nyv1xp3xxu']
['mail']
look what came mail
look came mail
  [
    {"relatedness": False, "type": "none", "explanation": "The post does not relate to a maintenance report feedback to public flat house."},
    ]

The post "look came mail" does not mention anything related to maintenance report feedback for public flat houses, so the answer is that the post does not relate to this category.