It is too difficult to 'pitch' commercial real estate agency services across the telephone.
You can then stage the messages at regular intervals to be sent out automatically at a certain time of day. https://www.digitaljournal.com/pr/news/press-advantage/central-phoenix-real-estate-brokerage-firm-axis-real-estate-invites-property-buyers-sellers-and-tenants-to-browse-its-listings