There is a silent killer in e-commerce that drains up to 15% of your annual revenue: Inventory Stockouts.
When a customer lands on a product page only to find it sold out, you have mere seconds before they bounce to a competitor. How you handle that moment determines whether you lose the customer forever or salvage the value of that visit.
In 2025, the strategy for handling out-of-stock inventory has evolved. It is no longer just about collecting email addresses for a “waitlist.” It is about maintaining SEO rankings, redirecting traffic, and earning affiliate revenue.
We tested the top solutions on the market to find the best plugins for handling inventory gaps. Here are the 5 best Out-of-Stock plugins for WooCommerce, ranked by their ability to protect your bottom line.
The Two Strategies: Waitlists vs. Redirects
Before we look at the plugins, you need to decide on your strategy. Most plugins fall into one of two categories:
- The “Retention” Strategy (Waitlists): You ask the customer for their email. You hope they don’t buy elsewhere. You hope they open your email 2 weeks later when you restock.
Pros: Builds email list. Cons: Delayed revenue, high churn rate. - The “Revenue” Strategy (Redirects): You accept you can’t fulfill the order, so you act as an affiliate. You send the customer to Amazon (or a partner) and earn a commission immediately.
Pros: Instant revenue, better UX, zero churn. Cons: You don’t capture the customer data.
Depending on your business model, one of these approaches will be superior. Let’s look at the tools.
#1. Stock Saver Pro (Best for Revenue & SEO)
Strategy: Affiliate Redirection & SEO Protection
Most out-of-stock plugins are passive—they just sit there collecting emails. Stock Saver Pro is active. It assumes that if a customer wants to buy now, they aren’t going to wait two weeks for your shipment to arrive.
[cite_start]Instead of showing a “Sold Out” badge, Stock Saver Pro automatically swaps your “Add to Cart” button with a “Buy on Amazon” button[cite: 5]. This allows you to monetize the traffic via the Amazon Associates program, earning commissions on the sale.
Key Features:
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- Automatic ASIN Links: You simply paste the Amazon ASIN into your product data, and the plugin builds the affiliate link automatically[cite: 5]. [cite_start]
- Global Tag Support: You enter your Amazon Associate tag once in the settings, and it applies to every redirected product[cite: 5]. [cite_start]
- Click Analytics: It includes a dashboard that tracks exactly how many clicks your out-of-stock items are generating, helping you forecast demand[cite: 5]. [cite_start]
- Manual Overrides: If the item isn’t on Amazon, you can redirect the button to any URL (like a partner store or dropshipper)[cite: 5].
The Verdict: If you want to make money today from products you don’t have in stock, this is the only option.
View Stock Saver Pro#2. WooCommerce Waitlist (Official)
Strategy: Email Retention
This is the “standard” choice for many stores. Developed by a trusted partner, it does exactly what it says on the tin: it adds a field for customers to enter their email addresses.
When you update the inventory number in WooCommerce, the plugin automatically fires off an email to everyone on the list. It is reliable and integrates well with the core WooCommerce data.
The Downside: It is purely passive. You are banking on the hope that the customer hasn’t already bought the item on Amazon 10 minutes after leaving your site.
#3. YITH WooCommerce Waiting List
Strategy: Lead Generation
YITH is a giant in the WooCommerce space, and their Waiting List plugin is robust. The main advantage here is the visual customization. YITH allows for significant styling of the “Notify Me” form, making it match your theme better than the native options.
It also keeps a separate tab of “requests,” allowing you to email customers manually if you only get a partial shipment in. It’s a solid choice for boutique stores with highly loyal customers who are willing to wait for handmade items.
#4. Back In Stock Notifier for WooCommerce
Strategy: Multi-Channel Alerts
Email open rates are dropping every year. This plugin attempts to solve that by offering SMS (Text Message) notifications in addition to email.
For younger demographics or hype-based product drops (like sneakers), SMS is king. The open rates are near 98%. However, this plugin requires a gateway for sending SMS, which adds an ongoing cost to your monthly overhead.
#5. The “Hide Out of Stock” Checkbox (Native)
Strategy: Avoidance (Not Recommended)
We are including this on the list only to tell you not to use it. WooCommerce includes a setting under WooCommerce > Settings > Products > Inventory called “Hide out of stock items from the catalog.”
Why this is dangerous:
- It creates 404 errors (or soft 404s) for search engines.
- It removes internal links, weakening your site structure.
- It confuses customers who may have bookmarked the page.
Never hide a product unless it is discontinued forever. Even then, a 301 redirect is better than hiding it.
Comparison: Which Plugin Should You Choose?
To help you decide, we broke down the three most important factors: SEO Impact, Revenue Speed, and Setup Difficulty.
| Plugin | Best Goal | Revenue Timing | SEO Impact |
|---|---|---|---|
| Stock Saver Pro | Affiliate Income | Immediate | Positive (Keeps Traffic) |
| WooCommerce Waitlist | Customer Loyalty | Delayed | Neutral |
| Back In Stock Notifier | Hype Drops | Delayed | Neutral |
Deep Dive: Why We Built Stock Saver Pro
We developed Stock Saver Pro because we were tired of seeing “Waitlists” with 500 people on them convert only 10 sales when the email finally went out. The reality is, consumer desire is fleeting.
If someone is looking for a specific camera lens or a kitchen gadget, they usually need it for a specific event or project. They are not browsing for fun; they are hunting.
Stock Saver Pro offers a technical advantage:
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- It detects stock status hooks automatically. You don’t have to manually turn the redirect on. As soon as WooCommerce says “Stock: 0”, the plugin fires[cite: 5].
- It keeps the “Add to Cart” logic intact. When you restock, the plugin goes back to sleep, and you resume selling your own inventory instantly. [cite_start]
- It tracks the data. Our analytics table logs every IP address and click timestamp[cite: 5]. This allows you to audit your Amazon Associates report to ensure you aren’t missing commissions.
Final Recommendation
If you sell proprietary, handmade goods that cannot be bought anywhere else (e.g., custom art), use a Waitlist plugin. Your customers have no choice but to wait for you.
However, if you sell commodities, electronics, books, or generic goods that can be found on Amazon, use Stock Saver Pro. If you make them wait, they will simply Google the product name and buy it from Bezos. You might as well send them there yourself and get paid for the referral.