Dynamically changing message classification and priority based on IOT device publication

Approaches for automatically and dynamically changing message classification and priority based on Internet-Of-Things (IOT) device publication are provided. A system includes: a CPU, a computer readable memory, and a computer readable storage medium; program instructions to receive a device status message from an Internet-of-Things (IOT) device; program instructions to determine a categorization of the device status message; program instructions to determine a classification of an email message; program instructions to compare the categorization of the device status message to the classification of the email message; and program instructions to assign a priority to the email message based on the comparing. The program instructions are stored on the computer readable storage medium for execution by the CPU via the computer readable memory.