+
+ if ( $opt{'to_contact_classnum'} ) {
+
+ my $classnum = $opt{'to_contact_classnum'};
+ my @classes = ref($classnum) ? @$classnum : split(',', $classnum);
+ if ( !@classes ) {
+ # traditional behavior: send to invoice email destinations (only)
+ @classes = ( 'invoice' );
+ }
+ @to = $cust_main->contact_list_email(@classes);
+ # not guaranteed to produce contacts, but then customers aren't
+ # guaranteed to have email addresses on file. in that case, env_to
+ # will be null and sending this message will fail.
+ }
+