Lists sender and subject on all mails in mailbox. MIME::WordDecoder is used to parse heads as most mails often has ISO-8859-1 encoded parts. It should be save to test it on any mailbox as it dosn’t change or remove anything from the mailbox.

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#!/usr/local/bin/perl -w
use strict;
use Mail::POP3Client;
use MIME::WordDecoder;
 
my ($serv, $usr, $pwd) = (@ARGV); # server, username and password as comandline parameters...
 
my $wd = default MIME::WordDecoder;
 
my $pop = new Mail::POP3Client( USER => $usr, PASSWORD => $pwd, HOST => $serv );
print "Found " . $pop->Count() . " messages.n";
for (my $i = 1; $i <= $pop->Count(); $i++) {
  foreach ( $pop->Head( $i ) ) {
    if (/^(From|Subject):s+/i) {
  print $wd->decode($_);
    }
  }
  print "n";
}
 
exit();