I would suggest you look at the answers posted at the link below, where jchris2989 stated:
For the most part banks and asset management companies are hiring the trash out companies and other vendors directly. The Agents are now only responsible for the re key of the home. Your best bet would be to sign up directly with the bank/asset companies to become a vendor. You can google the different asset companies or you can purchase the list of companies from bestreolist.com or other similar companies that sell these lists.