It looks like you need to add next unless $value; to :

        foreach $key (@ordnames) {
    
            $value = $FORM{$key};
            next unless $value;    # added this line
            # get rid of ^M and stuff
            $value =~ s/\x0d\x0a/ /g;
            $value =~ s/[\x0a\x0d]/ /g;
            unless (   $key eq "recipient"
                     || $key eq "recipients"
                     || $key eq "subject" 
                     || $key eq "redirect_to" 
                     || $key eq "validate" 
                     || $key eq "email_field" 
                     || $key eq "error_head" 
                     || $key eq "error_foot"        ) {
    
                $outmail .= qq|$key:\t\t$value\n|;
                # add each key and a tab to datastring
                $outdata .= qq|$value\t|;
            }
        }
[download]

HTH,
Charles K. Clarkson