You can add recipients to WooCommerce pre-defined email notifications using the composite hook woocommerce_email_recipient_{$email_id}. In the code below: You will define the desired email notifications in the first function (See this linked answer for other email IDs), You will define the desired additional recipient (emails) in the 2nd function. The code: add_action('woocommerce_init', 'additional_email_recipient_for_notifications'); function additional_email_recipient_for_notifications(){ // HERE below define the desired email notification $email_ids = array( 'new_order', 'customer_on_hold_order', 'customer_processing_order', 'customer_completed_order', 'customer_refunded_order', 'customer_partially_refunded_order', 'cancelled_order', 'failed_order', ); foreach( $email_ids as $email_id ) { add_filter( "woocommerce_email_recipient_{$email_id}", "additional_email_recipient" ); } } function additional_email_recipient( $recipient ) { if ( is_admin() && isset($_GET['tab']) && $_GET['tab'] === 'email' ) return $recipient; // HERE below define your additional email recipients $additional_recipient = array('additional1@example.com', 'additional2@example.com'); $recipient .= ',' . implode(',', $additional_recipient); return $recipient; } Code goes in functions.php file of your child theme (or in a plugin). Tested and works. Related: Target a specific email notification with the email id in WooCommerce