All notifications sent from Firesub can be turned on and off as you choose which notifications is interesting to you.
To change which notifications you receive click on the Settings menu in the sidebar.
Then click on the Notifications option in the settings list.
This will display a flyout with all types of notifications that you can receive from Firesub. A blue envelope icon indicate that you are receiving those types of notifications while a transparent envelope indicate that notifications are off.
Toggle notifications on/off by clicking on each notification.