1. At least one computer-readable storage media having instructions stored thereon that, when executed by a system, cause the system to: receive via a user interface of the system a user-defined custom event and one or more e-mail accounts associated with the user-defined custom event; receive sensor data from one or more sensors of the system; detect a sensor event based at least in part on a comparison between the sensor data and the user-defined custom event; and communicate with one or more messaging systems to transmit an email to the one or more e-mail accounts associated with the user-defined custom event.