Vad gör den här koden?

#!/usr/local/bin/perl
## use: perl file.pl lista.txt "remetente@mail.com" "assunto" fake.html


$ARGC=@ARGV;

if ($ARGC !=4) {

 printf "$0 <mailist> <remetente> <assunto> <fake.htm>\n\n";

#printf "spam MassSpam By c0dec5 - (PsychoPhobia Crew Since 2002)";

 exit(1);

}


$mailtype = "content-type: text/html";

$sendmail = '/usr/sbin/sendmail';

$sender = $ARGV[1];
$subject = $ARGV[2];
$efile = $ARGV[0];
$emar = $ARGV[0];
$count=1;

open(FOO, $ARGV[3]);
@foo = <FOO>;

$corpo = join("\n", @foo);

open (BANDFIT, "$emar") || die "Can't Open $emar";

while(<BANDFIT>)        {


($ID,

 $options) = split(/\|/,$_);

chop($options);

  foreach ($ID) {

$recipient = $ID;

open (SENDMAIL, "| $sendmail -t");
print SENDMAIL "$mailtype\n";
print SENDMAIL "Subject: $subject\n";
print SENDMAIL "From: $sender\n";
print SENDMAIL "To: $recipient\n\n";
print SENDMAIL "$corpo\n\n";
close (SENDMAIL);

printf "Sending... para $recipient [ OK $count ] Voila!";
$count++;
}

}

close(BANDFIT);

foreach ($ID) {

$recipient = $ID;
.
.
.
}