How to replace template string in email title in woocommerce?

patrick

I was trying to customize the emails. I tried to use {customer_first_name} and {customer_name} with no luck. But it did not replace. Am I using it incorrectly?

anderson

You can use the email template variable only in the body of the emails. For modifying the email titles/subject lines you have to use the corresponding filter and add some custom code to a child themes functions.php file or via a custom plugin.

add_filter( 'woocommerce_email_subject_customer_processing_order', 'change_processing_email_subject', 1, 2 );

function change_processing_email_subject( $subject, $order ) {
    global $woocommerce;

    $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);

    $subject = sprintf( 'Hi %s, thanks for your order on %s', $order->billing_first_name, $blogname );

    return $subject;
}