Add email send to buyer

I think it would be helpful to add email message to buyer with download link too.

I replaced line 140 of paypal-for-digital-goods.php onwards with this. Would you add it? Maybe even an option to send/not send!

  //email message to buyer and admin
    $thank_you_msg = apply_filters('wp_ppdg_thank_you_message', $thank_you_msg);
    $res[ 'msg' ] = $thank_you_msg;
    add_filter( 'wp_mail_content_type', 'wp_ppdg_set_html_mail_content_type' );
 
    $to = $payment[ 'payer' ]['payer_info'][ 'email' ];
    $subject = sprintf(__('Thank you for your purchase of %1$s','ppdg_locale'),$item_name);
    $body = $thank_you_msg;
    $headers=array();
    $headers[] = 'From: '.get_bloginfo('name').' <'.get_option('admin_email').'>' . "\r\n";
    $headers[] = 'Cc: '.get_bloginfo('name').' <'.get_option('admin_email').'>' . "\r\n";
    wp_mail( $to, $subject, $body,$headers );
    remove_filter( 'wp_mail_content_type','wp_ppdg_set_html_mail_content_type' );
    
    echo json_encode( $res );

    wp_die();
}
function wp_ppdg_set_html_mail_content_type() {
    return 'text/html';
}