Systems and methods for automated document separation. The system includes a host device that is configured to communicate with one or more client devices over a network. The host device includes a splitting module, a correction module, a knowledge base, and a document store. The splitting module is configured to perform a multi-level document splitting. Pages are grouped into documents based on the sender information, the lack of sender information, and whether the sender is known. The splitting module performs an automatic correction of the initial document separation based on information stored within the knowledge base. The knowledge base is updated each time a document is processed and a user provides feedback related to whether the documents were successfully separated. Based on the success or failure of a particular document separation, the knowledge base evaluates the modifications made by a user to learn from the errors made during document separation.