---
title: Hooks Overview
description: Overview of Actions and Filters available in WooNooW
date: 2024-01-31
---

## Introduction

WooNooW provides a rich set of actions and filters allowing developers to customize almost every aspect of the plugin without modifying core files.

### Hook Categories

*   [Notifications](/docs/hooks/notifications) - Customize email templates, subjects, and channels.
*   [Subscriptions](/docs/hooks/subscriptions) - Intercept payment logic and modify gateway behavior.
*   [Frontend & checkout](/docs/hooks/frontend) - Adjust checkout fields and SSR caching.
*   [Newsletter](/docs/hooks/newsletter) - Subscribe/unsubscribe events.

### Usage Example

```php
add_filter('woonoow_email_default_subject', function($subject, $recipient, $event) {
    if ($event === 'subscription_renewal') {
        return 'Your subscription is renewing soon!';
    }
    return $subject;
}, 10, 3);
```
