You can change that in the general settings. Click the hamburger menu and General Options.  Change the email settings there.

Check here - https://helpcenter.veeam.com/docs/backup/hyperv/general_email_notifications.html?ver=120

Agreed with ​@Chris.Childerhose.

The window you screenshotted is only a “subsetting” from a specific job but you have global settings as well that will send email notifications.

Ok.. thanks all for guideline. 

Not a problem let us know if this fixes the issue. 

Also, if you use enterprise manager, there is a daily summery.