Add CC and BCC to WooCommerce Emails

add-cc-bcc-to-woocommerce-emails.php

<?php
// place this code in your functions.php file.

function add_cc_to_certain_emails( $headers, $id ) {
  // Define the email type and check if true (You can use all woocommerce email types, for more info: https://docs.woocommerce.com/wc-apidocs/class-WC_Email.html)
  if ( 'new_order' === $id ) {
    $headers .= "Cc: FirstName LastName <fistname-lastname@mail.com>\r\n";
    $headers .= "Bcc: FirstName LastName <fistname-lastname@mail.com>\r\n";
    // You can add more extra email headers here. Make sure you use $headers .= otherwise it will overwrite the variable.
  }
  return $headers;
}
add_filter( 'woocommerce_email_headers', 'add_cc_to_certain_emails', 10, 3 );