Another solution is using Postman SMTP Mailer/Email Log
With this plugin all the mails sent are appearing in i.e. my google sent mail folder.
Your mail provider needs to provide oAuth2 which has the advantage that you do not need to provide your mail login credentials to some plugins / wordpress etc.
As an alternative you could let woocommerce add additional mail recipients i.e. in bcc with this code in your functions.php:
/** Add another email recipient to all WooCommerce emails */
add_filter( 'woocommerce_email_headers', 'add_bcc_all_emails', 10, 2);
function add_bcc_all_emails($headers, $object) {
$headers = array();
$headers[] = 'Bcc: SendersName <[email protected]>';
$headers[] = 'Content-Type: text/html';
return $headers;
}