Abstract: Various systems, methods, and other aspects improve processes for handling user data deletion requests where such user data is stored in third-party data stores. For instance, a method may include receiving a data deletion request, determining a third-party data processor; and sending a user identification request via the network to the third-party data processor that includes a unique user identifier for the user. The method may receive a user identification response confirming that the third-party data processor is storing the information about the user, and responsively send a third-party data deletion request to the third-party data processor requesting that the information stored about the user in the third-party data store. In response, the method receives a third-party data deletion response including a transaction identifier for the third-party data deletion request and stores it. The transaction identifier can then be used to help ensure that the information is eventually deleted.