I<to> - comma-separated scalar or arrayref of recipients
(default is invoicing_list)
+I<bcc> - blind-copy recipient address (default is none)
+
I<subject> - The subject line of the sent email notification
(default is "Notice from company_name")
send_email(from => $from,
to => $to,
+ bcc => $options{bcc},
subject => $subject,
body => $notify_template->fill_in( PACKAGE =>
'FS::notify_template::_template' ),