In the Configurations tab, expand your configuration.
Expand Application/Notifications.
In the Enable Issue Notifications field, choose true to enable automated notifications when Issues are added or modified. Choose false to disable this setting.
In the Override Notification Email from User field, choose true to always use the system’s From e-mail address.
Choose false to use the e-mail address of the user who sends notifications, if their e-mail address is configured.
In the Notification from Email User field, enter the e-mail address that will send Notifications when either NotificationsFromEmailOverride is true or the user’s e-mail address is not configured.