A delivery person is a messenger; he can bring you something good, something bad, or something neutral. In a dream the delivery person could represent the medium through which you receive communication. You are in constant contact with the Universe and your Higher Self, whether you realize it or not. This communication comes through to you in many forms. Thus, dreaming of a delivery person could represent the person, book, website, etc… that communicates to you the exact information that you need from your Higher Self or the Universe.