woocommerce_email_editor_send_preview_email_personalizer_context

// Modifier la valeur avec le filtre 'woocommerce_email_editor_send_preview_email_personalizer_context'
add_filter('woocommerce_email_editor_send_preview_email_personalizer_context', 'ma_fonction_filtre', 10, 1);

function ma_fonction_filtre($personalizer_context) {
    // Modifier la valeur
    return $personalizer_context;
}