this is much better than it was, so thank you webfiend. it almost works already. I must only look at this:

$parser->output_under('/tmp');
my $entity = $parser->parse(\*DATA);
[download]

I want to do it with a standard in. this because the program will be set on a server where the mail will sent to in the form of a Bcc. and another thing: your testmail is fine;)