If Users & System Administrators are set to receive e-mails, they will receive maintenance notices and other e-mails with information related to cybozu.com.

If you want to change the e-mail addresses to which e-mails are delivered or configure who will and will not receive e-mails, you can do so from Users & System Administration.
For details on how to configure the settings, refer to the following page.
Receiving E-Mails from Users & System (Only available in Japanese)