Sending files from one device to another device over a network

Techniques are provided for causing a file to be sent from a source device (110) over a network (120) to one or more destination devices (150A-C). An intermediary (130) receives a notification of a file and determines which destination device(s) are to retrieve the file. The intermediary (130) may determine the destination device(s) (150A-C) based on one or more attributes of the file. The intermediary may cause the file to be stored in persistent storage that is maintained by a separate storage service (140). The intermediary (130) may cause the file to be deleted after a particular period of time. The source device (110) may send multiple versions of a file to the intermediary (130), which determines which destination device (150A-C) is to receive which version. The file may be a digital image and a destination device (150A-C) may be a device that displays a slideshow of digital images while the destination device receives the digital image over a network.