That looks awful. I would tend to throw it away and use something else. Here is a code fragment of a script I am working on at the moment. You should be able to adapt it to your use. The key to sanity is Mime::Entity which is part of the Mimetools bundle (or some damned named that I can never remember correctly).

    use strict;
    use MIME::Entity;

    my $mime = MIME::Entity->build(
        To          => 'foo@example.com',
        Cc          => 'bar@example.com',
        From        => 'me@example.org',
        'Reply-To'  => 'postmaster@example.org',
        Subject     => "Make Money Fast",
        'X-Version' => $VERSION,
        Type       => 'multipart/mixed',
    );

    $mime->attach( Data => <<EMAIL_HEADER );
Hi,

here are a number of ways you can MMF
EMAIL_HEADER

    for my $file( @files ) {

        $mime->attach(
            Path     => $file,
            Type     => "application/octet-stream" . ";name=$file",
            Encoding => 'base64',
        );
    }
    $mime->attach( Data => 'insert witty sig here' );
    $mime->smtpsend;
[download]

oh my god! I don't really send spam, honest.

update: erm, the perils of cut'n'paste coding. Code rearranged slightly to make more sense :)

--

g r i n d e r
just another bofh

print@_{sort keys %_},$/if%_=split//,'= & *a?b:e\f/h^h!j+n,o@o;r$s-t%t#u';