Systems for enforcing multiple object deletion policies over shared content objects that are accessible in a cloud-based service platform. A method embodiment commences upon receiving two or more sets of file deletion parameters that describe respective two or more object deletion policies covering a portion of the shared content objects. Records that form associations between the file deletion parameters and at least some of the shared content objects are made available to event listeners in the system. Upon detecting events associated with access to the shared content by the users, the event listeners analyze the events to identify objects of the shared content that are associated with the multiple object deletion policies. If an object is covered by conflicting deletion policy actions, then actions of the deletion policy having a higher priority are applied. Some actions prevent or delay modification of the objects. Lower priority data retention deletions are suppressed.