> For the complete documentation index, see [llms.txt](https://rez-notify-me.gitbook.io/rez-notify-me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rez-notify-me.gitbook.io/rez-notify-me/preorder/how-preorder-campaigns-work.md).

# How preorder campaigns work?

Preorder lets you sell products before they’re in stock. You control when the Preorder button appears based on product inventory. 

<figure><img src="/files/tDJ8DI2sfq1cj4TjBtyT" alt="" width="375"><figcaption></figcaption></figure>

This article explains the **3 main settings** for preorder campaigns and how they work.

<figure><img src="/files/QB8rRuxQnZYVJRq6ptyc" alt=""><figcaption></figcaption></figure>

#### 1️⃣ Show Preorder **When Product Is Out of Stock**

**Best for:** limited stock items or restocks in progress

**When the campaign is published**

* ✅ Continue selling when out of stock → ON
* ✅ Track quantity → ON

<figure><img src="/files/Cs3hMVpojZYBw9Xjaumq" alt=""><figcaption></figcaption></figure>

**When the campaign is unpublished**

* ❌ Continue selling when out of stock → OFF

**What customers see**

* Preorder button appears when **stock = 0**
* When stock is added, the button switches back to **Add to Cart**

***

#### 2️⃣ Always Show Preorder

**Best for:** made-to-order products

**When the campaign is published**

* ✅ Continue selling when out of stock → ON
* ✅ Track quantity → ON

<figure><img src="/files/m0RoebaFpNQCzyrqa970" alt=""><figcaption></figcaption></figure>

**When the campaign is unpublished**

* ❌ Continue selling when out of stock → OFF

**What customers see**

* Preorder button is **always visible**
* Stock level does not affect the button

***

#### 3️⃣ Show Preorder **When Product Is In Stock**

**Best for:** product launches or long shipping times

**When the campaign is published**

* ✅ Track quantity → ON

**When the campaign is unpublished or deleted**

* ✅ No Shopify settings are changed

**What customers see**

* Preorder button appears when **stock > 0**
* When stock runs out, the button changes to **Sold Out**

***

#### Quick Comparison

| Setting                         | When Preorder Button Shows | At 0 Stock       |
| ------------------------------- | -------------------------- | ---------------- |
| Show Preorder When Out of Stock | Stock = 0                  | Preorder appears |
| Always Show Preorder            | Always                     | Preorder stays   |
| Show Preorder When In Stock     | Stock > 0                  | Sold Out appears |

***

### 🎯 Which Option Should You Choose?

* **Show Preorder When Out of Stock**\
  → Keep selling between restocks
* **Always Show Preorder**\
  → Produce items after customers order
* **Show Preorder When In Stock**\
  → Build launch hype or set expectations for long delivery times