use Net::POP3;

# $MAILSERVER,$MAILUSER,$MAILPASS defined here!

# Constructors
$pop = Net::POP3->new($MAILSERVER);

if ($pop->login($MAILUSER, $MAILPASS) > 0) {
   my $msgnums = $pop->list; # hashref of msgnum => size
   foreach my $msgnum (keys %$msgnums) {
     my $head = $pop->top($msgnum,0);
     my ($subject, $from) = analyze_header($head);

     print "From: $from ; Subject: $subject \n";
   }
}
$pop->quit;
print "done.\n";

sub analyze_header {
  my $header_array_ref = shift;

  my $header = join "", @$header_array_ref;

  my ($subject) = $header =~ /Subject: (.*)/m;
  my ($from   ) = $header =~ /From: (.*)/m;

  return ($subject, $from);
}

##</code><code>##

starting...
From: "=?utf-8?B?Q2hyaXMgSHVudA==?=" <chris@example.com> ; Subject: =?utf-8?B?VGVzdA==?= 
From: "=?utf-8?B?Q2hyaXMgSHVudA==?=" <chris@example.com> ; Subject: =?utf-8?B?VGVzdA==?= 
done.