Email sent to wrong user when woo order failed

[yckelvin]

Dear Sir/Madam,

I add the below script to custom email for the woo failed order

add_action('woocommerce_order_status_changed', 'send_custom_email_notifications', 10, 4 );
function send_custom_email_notifications( $order_id, $old_status, $new_status, $order ){
    if ( $new_status == 'cancelled' || $new_status == 'failed' ){
        $wc_emails = WC()->mailer()->get_emails(); // Get all WC_emails objects instances
        $customer_email = $order->get_billing_email(); // The customer email
    }

    if ( $new_status == 'cancelled' ) {
        // change the recipient of this instance
        $wc_emails['WC_Email_Cancelled_Order']->recipient = $customer_email;
        // Sending the email from this instance
        $wc_emails['WC_Email_Cancelled_Order']->trigger( $order_id );
    } 
    elseif ( $new_status == 'failed' ) {
        // change the recipient of this instance
        $wc_emails['WC_Email_Failed_Order']->recipient = $customer_email;
        // Sending the email from this instance
        $wc_emails['WC_Email_Failed_Order']->trigger( $order_id );
    } 
}

The email was correctly sent to both custom email and administrator email but it also sent to another customer email

All the above orders are failed orders, email starts with sunny... is the correct email related to order #74677 but email alanlo... is not correct.

The above screenshot is the email content and you should find the receiver's email and email address at footer are not the same.

Please advise how I can fix it.

[capuderg]

Hi @yckelvin, our WP Mail Logging email is only collecting the data that is passed to the wp_mail function, so I think the issue for your case is happening on the WooCommerce level, so I suggest reaching out to the WooCommerce support, so they can help you out with the correct filter usage for your use case.