Use of uninitialized value in concatenation (.) or string at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 55.
 at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 55
The size of the message is kB
Continue ?
Use of uninitialized value in concatenation (.) or string at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 65.
 at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 65
Number of email parts : 2
hash:
$VAR1 = undef;
hash:
$VAR1 = undef;

##</code><code>##

Use of uninitialized value in open at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 132.
 at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 132
No such file or directory at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 132.
 at C:\Dokumente und Einstellungen\holzner.s\Eigene Dateien\perlmail\perlguard_gu_version.pl line 132
</code
it seems like the script doesn't recognize the key pair ? but how is that (empty attachment array) possible?

##</code><code>##

#!/usr/bin/perl

use strict;
use warnings;

use Data::Dumper;
use Email::Simple;
use Email::MIME;
use Mail::IMAPTalk;
use Email::MIME::Attachment::Stripper ;
use constant DUMP => 'C:\\Dokumente und Einstellungen\\holzner\.s\\Eigene Dateien\\perlmail\\';

my $server = 'mymailserver';
my $imap_port = '143';
my $login = 'mylogin';
my $password = 'mypwd';

print "******************\n";
print "*  MAIL EXTRACT  *\n";
print "******************\n\n";
my $FolderName = 'THO';
print "Connecting to IMAP server at ".$server.":".$imap_port."...\n";

# open the imap connection using IMAP::Talk
my $imap = Mail::IMAPTalk->new(
            Server          => $server,
            Port            => $imap_port,
            Username        => $login,
            Password        => $password,
            Separator       => '\\',
            RootFolder      => '',#'Inbox',
            CaseInsensitive => 1)
          || die "Connection failed. Reason: $@";

# Select folder and get first unseen message
$imap->select($FolderName) || die $@;
my $MsgId = $imap->search('not', 'seen')->[0];

if ($MsgId) {

    # Get the enveloppe
    print "The message with ID ".$MsgId." has the following enveloppe:\n";
    my $MsgEV = $imap->fetch($MsgId, 'envelope')->{$MsgId}->{envelope};

    print "From: " . $MsgEV->{From}."\n";
    print "To: " . $MsgEV->{To}."\n";
    print "Subject: " . $MsgEV->{Subject}."\n";
    print "Sender: " . $MsgEV->{Sender}."\n";
    print "Continue ?\n";
    getc(STDIN);

    # Get the message body structure
    my $MsgBS = $imap->fetch($MsgId, 'bodystructure')->{$MsgId}->{bodystructure};
    print "MsgBS -->". $MsgBS. "\<--\n";
    print "The size of the message is ". $MsgBS->{Size} ."kB\n";
    print "Continue ?\n";
    getc(STDIN);

    # Find imap part number of text part of message
    my $MsgTxtHash = Mail::IMAPTalk::find_message($MsgBS);
    my $MsgPart = $MsgTxtHash->{text}->{'IMAP-Partnum'};

    # Retrieve message text body

    my $MsgTxt = $imap->fetch($MsgId, "body[$MsgPart]")->{$MsgId}->{body};
    #print Dumper( $MsgTxt );
    #print "Full message : \n";
    #print "\n<-------------------------------------->\n";
    #print $MsgTxt."\n";
    #print "\n<-------------------------------------->\n";
    #print "Continue ?\n";
    getc(STDIN);

    # Transform the content from IMAP:Talk into a MIME object using Email:MIME
    my $parsed = Email::MIME->new($MsgTxt);
    #print "Parsed content :\n". Dumper( $parsed) . "\n";

    # display the MIME structure
    #print "MIME structure :" . $parsed->debug_structure . "\n";
    my $parts = $parsed->parts;

    print "Number of email parts : $parts\n";
    my @parts = $parsed->parts;

    my $i=0;
	#foreach (@parts) {
    #    print "Dumped email part $i:\n",
    #           Dumper( $parts[$i] ),
    #          "\n";
    #	$i++;
	#}

    my $decoded = $parsed->body;
    #print "body: " . Dumper( $decoded ) . "\n";

    # Give the Email MIME content to Attachment::Stripper for extraction
    my $stripper;

    if ($parts > 1) {
        $stripper = Email::MIME::Attachment::Stripper->new($parts[1])
    }
    else {
        die "This message consists of a single part.\n";
    }

    die "Not an regular MIME part given to stripper:\n"
         if not ref $stripper;

    # The extraction method itself
    my @attachments = $stripper->attachments;

    # Display the resulting attachments hash
    $i=0;
    foreach (@parts) {
        my $j=0;
        foreach ($parts[$i]) {
            print "hash:\n" . Dumper( $attachments[$i]->{payload}) . "\n";
            $j++;
        }


        $i++;
    }

    # Close the IMAP connection
    $imap->logout();

    # Save the attachments on the local disk
    foreach my $att ( @attachments )
    {
    	my $file = $att->{filename};
    	open my $fh, '>', $file or die $!;
    	print $fh $att->{payload};
    	close $fh;
    	chmod 0644, $file;
    }
}
else {
    print "No new message in the mailbox\n"
}