For many users, email notification of success or failure of a backup helps them keep on top of the status of their backups, particularly with scheduled backups which take place in the background. 

Program Defaults and SMTP Server settings

The default settings are used when creating new backup definitions

• From Other Tasks select Edit Defaults. 

Email notification for existing individual backups

• Click 'Backup Definition Files', right click on the backup definition and select 'Advanced Properties'.

• Click the Email icon.

• Set your e-mails for success and failure of a backup as described above.
• Click OK.