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Upsell Add-ons bundle

Upsell Add-ons shows discounted extra products on a main product's page, so shoppers can add them to the cart with a single click.

How Upsell Add-ons works

You pick one or more main products and a list of add-on products. When a shopper views a main product, the add-ons appear under it as a checklist. Every add-on the shopper ticks goes into the cart with the main product, at the discounted price.

Example: sell a suitcase and give 10% off a sleep mask or a travel pillow.

How the discount works:

It applies only to add-on products. The main product keeps its normal price.
It applies only while a main product is in the cart. If the shopper removes the main product, the add-ons go back to full price.
Every add-on product gets the same discount value.
It combines with your other product, order and shipping discounts.

Before you start

Upsell Add-ons is available from the Basic plan up. It isn't available on the Free plan.
The number of campaigns you can run at the same time depends on your plan.
The main products must be specific products. You can't use collections or "All products".

How to create an Upsell Add-ons campaign

In the Pareto app, go to Campaigns and click Create campaign.
Choose the Upsell Add-ons template.

Upsell Add-ons template under Mix-and-match bundle section

In the Rule settings tab, enter a Campaign name. It must be unique, and only you see it in the app.
Optional: enter a Display name. Shoppers see it in the cart and at checkout when the discount applies. If you leave it empty, the campaign name is used.
In Main products, search for or Browse the products that should show the add-ons.
In Add-ons products, search for or Browse the products to offer as add-ons. In the picker, select only the variants you want to discount.
Under Discount value, choose the discount type and enter a value:

%: a percentage off each add-on unit (maximum 100).
Amount off each: a fixed amount off each add-on unit.
Free: the add-ons are free. No value is needed.

Optional: change the Min Qty and Max Qty for each add-on (see the next section).
Click Save, then click Turn on under Campaign status.

Upsell Add-ons rule settings with Main products search, Add-ons products picker, a 20% discount value, and the Apply to countries, Target customer, Schedule and Maximum discount uses cards, next to a product page preview listing add-ons with checkboxes and variant dropdowns

Set the minimum and maximum quantity for each add-on

Each add-on in the list has two fields:

Min Qty: the lowest quantity of this add-on that gets the discount. It is also the starting quantity on the widget. The default is 1.
Max Qty: the highest number of units that get the discount. 0 means no limit.

Things to know:

Min and Max apply to each variant separately.
Units above Max are charged at full price.
If Max is lower than Min, the app resets Max to 0 (no limit) when you save.
One main product in the cart unlocks the discount on up to Max units of each add-on. The discount isn't matched 1 to 1 with the number of main products, so set Max if you want to cap it.

You can drag the add-ons to change the order they appear in on the storefront.

Advanced rule settings

Four optional cards sit below the discount settings:

Setting	What it does	Default
Apply to countries	Limits the discount to shoppers in the countries or regions you choose. Available on the Advanced plan.	All countries
Target customer	Limits the discount by customer type, for example logged-in customers, B2B or D2C customers, or customers with specific tags.	Everyone
Schedule	Sets a start date and time, and optionally an end date and time, in the timezone you choose. Available from the Basic plan.	No schedule
Maximum discount uses	Caps total uses or uses per customer, per day, month, year or lifetime. This needs the Pareto Limit app.	No limit

Customize the display

Open the Display settings tab to change how the add-ons look:

Campaign details: show or hide the campaign name above the add-ons, and set its text, size and color. You can use {campaign_name} or {display_name}.
Layout settings: turn on or off Show original price, Show select variant and Show quantity input.
Notice in cart: the message shown in the cart about the add-on offer.
Pop-up suggestions: choose whether the add-ons pop-up in the cart opens automatically, and edit its header, description, discount badge ({{discount}}) and button text.
Advanced settings: choose between visual swatches and a dropdown list for variants, turn on price rounding, hide the offer when the main product variant is out of stock, or hide the offer on the product page.

Use the Checkout upsell tab to set up the Pareto - Upsell Add Ons block. It suggests add-ons that aren't in the cart yet on the checkout, thank you and order status pages. To show it, add the block in the Shopify checkout editor.

What shoppers see on your store

Product page

On a main product's page, the add-ons appear above the add to cart button.
Each add-on shows a checkbox, image, title, variant picker, quantity (if enabled) and the discounted price. The original price is crossed out.
All checkboxes start unticked, so the shopper chooses which add-ons to take.
When the shopper clicks the theme's Add to cart button, the main product and every ticked add-on go into the cart together.

Cart

The cart notice and cart recommendation remind shoppers about add-ons they haven't added yet, showing the discounted price.
The pop-up lists the add-ons with checkboxes, the number of selected items and the amount saved. Clicking the button adds the ticked add-ons and opens the cart page.

FAQ

Why isn't the add-on discount applied in the cart?
Check that:

a main product is in the cart
the add-on variant is one you selected in the campaign
the add-on quantity is at least Min Qty
the shopper matches the country and customer targeting.

Can I set a different discount for each add-on?
Not in a single campaign. Every add-on shares one discount value. To use different discounts, create a separate campaign for each.

Can I use a collection as the main product?
No. Main products must be specific products.

The same product is both a main product and an add-on. What happens?
One unit is counted as the main product and isn't discounted. The other units get the add-on discount.

Can I hide the widget and only use the checkout block?
Yes. Turn on Hide this offer on product page in Display settings > Advanced settings.

Updated on: 17/09/2026

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