Add Bcc to WooCommerce Emails

add-bcc-to-email.php

<?php

add_filter( 'woocommerce_email_headers', 'mycustom_headers_filter_function', 10, 2);

function mycustom_headers_filter_function( $headers, $object ) {
	
	$email = array('new_order', 'new_booking');
	
	if (in_array($object, $email)) {
        $headers .= 'BCC: Admin <email@domain.com>' . "\r\n";
    }

    return $headers;
}