$file='file.html';
$mime_msg->attach(Type => 'text/html', Path => $file, Filename => $file ) or die "Error attaching html: $!\n";

##</code><code>##

$file='file.html';
$mime_msg->attach(Type => 'text/html', Path => $file, Filename => $file ) or die "Error attaching html: $!\n";
$file2='attach.csv';
$mime_msg->attach(Type => 'application/csv', Path => $file2, Filename => $file2 ) or die "Error attaching html: $!\n";