BCC all emails sent from IN to internal email address

We are running Invoice Ninja - v4.1.5; all emails sent out from IN, we want to get a copy BCCed to our internal email address. How can we do this?

I see a section in Settings > Email Settings >
BCC Email (Privately include this address with client emails.)

But this doesn’t appear to send out any payment received emails.

Check under Basic Settings -> Notifications. There should be several check-boxes to tell the system when to send notification emails.