[Koha] Send all notices to all available eMail addresses

[zefanja]

Hi all,

we are using Koha in our school library and we have the following
"problem". We checkout books to all of our students starting from
preschool. Especially the younger once don't have a personal eMail
address. So we like to send notices (checkouts, checkins, overdues...)
to both parents. As far as I understand Koha it send the notices only to
one address. We could put in one of the parent's email, but we like to
inform both.

I've read that overdue_notices.pl has an repeatable --email parameter.
Where can I change it to send the notice to both parents?

Are there other ways to solve this problem or is it just not possible?

I'm thankful for any hints.

Regards,
Stephan