Why can i see emailed payment advice in report archive, but not for the invoices i have sent out?

I am using standard IFS front end setup to email out payment advice to suppliers, and i have noticed when that happens it registers in the report archive under ‘hidden reports’

I would like to see the same thing for invoices we are sending out

I know e-mails are being sent, i can see them in the application messages but information there is limited.

Is there anythign i can switch on to record the e-mailing of invoices in the report archive?

Thanks

Bruce