Hi,
well i think regardless if you send per mail or print the distribution list is the same.
just a blind guess the delivery is sent to the consumer.
when you check the delivery output (TCODE vl02n - see screenshot below) for a specific delivery you will find a GPNR listed. That is what is written in Table NAST and based on hat the output is sent.
if you want to get sure check the driverprogramm how it selects the GPNRs. you will find it in TCODE NACE related your output type.
regards
Stefan Seeburger