A system of resource-based action attribution provides a mechanism for tracking actions performed on a resource shared among multiple users of a resource sharing system, whether the users are authenticated within the resource sharing system or not. The tracking mechanism may allow users to track identifying information of other users who perform actions (e.g., editing actions) on the shared resource. A user can access a resource by providing a resource identifier and/or an access credential associated with the resource. The user's actions on the resource can be associated with an invitee identifier (e.g., an email address) that is associated in memory with the resource identifier and/or the access credential.