US Patent 10536407 Converting shared files to message attachments

Functionality is disclosed herein for converting shared files to message attachments. A message interface is displayed that allows a user to compose an electronic message and to specify files to attachments. For example, a user may use a messaging client to specify the files to be converted to an attachment. The files that are specified to be attached to the electronic message are stored by a sharing service that is separate from the messaging service. Instead of downloading the specified files to the messaging client, the sharing service communicates the specified files directly to the messaging service. In this way, the amount of data downloaded to the messaging client associated with the computing device is reduced. When the user sends the message, the messaging client sends the message with the attachments to one or more recipients.