my $error = send_email(
'from' => $conf->config('invoice_from'),
'to' => \@invoicing_list,
- 'subject' => $conf->config('cancelsubject'),
+ 'subject' => ( $conf->config('cancelsubject') || 'Cancellation Notice' ),
'body' => [ map "$_\n", $conf->config('cancelmessage') ],
);
#should this do something on errors?