A network device includes a processor; and a memory storing computer-readable instructions therein, the computer-readable instructions, when executed by the processor, causing the network device to perform: storing a first mail address and a second mail address; generating a first email to be addressed to the first mail address and a second email to be addressed to the second mail address, the first email having a first body including a URL, the second email having a second body including the URL; detecting a specific failure occurring in the network device; transmitting the first email to the first mail address and the second email to the second mail address when the specific failure is detected.