Systems, devices, methods, instructions, and other implementations are described for network data management. One embodiment involves request data received at a device associated with a digital lockbox, where the request data includes identifying information for an originating device associated with a location and is associated with a user device. A unique token is generated with the identifying information. The unique token can be used to tokenize a network link to create a secure one-time link. The system transmits the one-time link, which can then be used to facilitate secure communications between a computing system associated with the originating device and the user device.