1. A Web-based system for intelligent paperless document management, comprising, (a) at least one user account and at least one inbox, wherein said user account requires security sign-up and said at least one inbox accepts incoming documents; (b) at least one automatic indexing engine to automatically classify said incoming documents received by said inbox; wherein said at least one automatic indexing engine does not require barcodes or separators; (c) a repository to store documents classified by said at least one automatic indexing engine; and (d) a online collaborative portal; said online collaborative portal allows access of multiple users to documents in said repository; wherein said system does not provide the capability of prearranging access levels according to functions of said multiple users; and wherein said system does not prohibit a user from modifying or deleting a document in said depository.