Systems and methods for document management

A document management system, comprising:

• at least one subsystem that stores a document of a user in storage of an institution system in accordance with a retention policy;
• at least one subsystem that encrypts the document with a key using an encryption module of a computing device of the institution system to generate an encrypted document;
• at least one subsystem that sends the encrypted document from the institution system to a document store of an aggregator, the aggregator being a separate entity from an institution associated with the institution system and storing the encrypted document in the document store beyond when the document is accessible by the institution system based on the retention policy;
• at least one subsystem that forwards a user request to retrieve the encrypted document from the aggregator;
• at least one subsystem that provides the retrieved encrypted document to a user;
• and
• at least one subsystem that sends the key via a communications network from a key store of the institution system to a user computing device to decrypt the encrypted document from the aggregator after the document is purged from the storage of the institution system based on the retention policy.