How do I upsell items with Slide Cart?
How do I upsell items with Slide Cart?
Our paid plans (Growth, Pro, and Enterprise) offer an upselling feature that enhances your shopping cart and boosts conversion rate. Help customers discover products they'll love by recommending top-selling and related products directly from their cart.
Note for existing merchants: We recently unified our upsell system. What was previously called "Advanced Upsells" is now simply your main Upsells page, and "Basic Upsells" are now "Fallback upsells."
Overview of Upsell Types
Slide Cart now offers three ways to create upsell recommendations:
- Manual Product Mapping - Link specific products to upsell when they're added to cart
- Cortex AI Upsells - AI-powered recommendations via our Lifetimely integration which looks at frequently bought together products
- Shopify Recommended Upsells - Automated upsells recommended by Shopify's API
- Fallback Upsells - Universal products shown when no specific upsell exists
Setting Up Upsells
Manual Product Mapping
Create specific product-to-product upsell relationships for full control over what customers see.
To set up:
- Go to Upsells in your Slide Cart dashboard
- Click Create Upsell
- Select your Trigger Product (the item that when added to cart, will show the upsell)
- Select your Upsell Product (what you want to recommend)
- Save your settings
You can create multiple upsell mappings for different products. When a trigger product is added to the cart, its linked upsell will appear in the recommendations.
Fallback Upsells
Fallback upsells appear when a product in the cart doesn't have a specific upsell mapped to it. Think of these as your "default" recommendations.
To configure:
In your Slide Cart dashboard, go to Features > Upsell Display
Scroll to Fallback upsell products
Choose one of three options:
Option 1: Do not show fallback
Upsells only appear for products with manual mappings or Cortex recommendations
Option 2: Use Shopify's recommendation API
- Automatically shows Shopify's suggested products based on:
- Purchase history
- Product descriptions (English storefronts only)
- Related collections
No configuration needed - Shopify handles it
Option 3: Choose fallback products manually
- Select up to 5 specific products to always show as fallback upsells
- Click Select fallback upsells and choose your products
- These will display for any product without a specific upsell mapping
Cortex AI Upsells (Powered by Lifetimely)
The smartest way to maximize AOV is letting Cortex AI handle your upsell recommendations.
How it works:
- Cortex analyzes your store data through Lifetimely to identify high-converting upsell opportunities
- Receive AI-powered recommendations for which products to upsell together
- Approve recommendations with one click
- Lifetimely continuously tracks performance and refines future suggestions
To get started:
- Navigate to the Upsells page in your Slide Cart dashboard
- If you see products without upsells, click "Go to Cortex AI in Lifetimely"
- Review and approve Cortex recommendations
- Cortex will automatically create and optimize your upsells
Benefits:
- Data-driven decisions based on your actual store performance
- Removes guesswork and manual hours from upsell management
- Continuous optimization through performance tracking
Display Options
Placement
Choose where upsells appear on your storefront:
Option 1: Inside Cart (Default)
With this option, your upsells will appear inside the cart.

Option 2: Next to Cart
This option allows you to take advantage of the full screen by displaying your upsells outside the cart when customers browse on their laptops or desktops. For a better shopping experience, when the screen gets too small (mobile, tablets, etc.), the upsells will default back to inside the cart.

Layout Style
When upsells are inside the cart, choose your preferred layout:
- Carousel - Swipeable horizontal scroll
- Vertically Stacked - Products listed one below another
- Slider - Animated horizontal slider with navigation arrows
To configure:
- Navigate to Features > Upsell Display
- Select your preferred placement and layout style
- Adjust Number of upsells to display (2-5 recommended)
Additional Settings
Upsell Button Action
Choose what happens when customers click an upsell:
- Add to cart - Immediately adds the product to cart (default, highest conversion)
- View product - Redirects to the product page for more details
Display Settings
- Show compare at prices - Display original prices with strikethrough when products are on sale
- Show upsell even if item is in cart - Continue showing upsells even after customer adds them (useful for frequently repurchased items)
Styling
For "Next to Cart" placement, customize the background color to match your brand:
- Go to Styles section in Upsell Display
- Select your color using the Next to cart placement bg color picker
Best Practices
- Start with Cortex AI if you have Lifetimely installed - it removes guesswork and continuously optimizes
- Use manual mapping for strategic pairings (e.g., phone case with phone)
- Set up fallback upsells to ensure you're always maximizing revenue opportunities
- Test different layouts - try Carousel vs Stacked to see what converts better for your audience
- Enable "Show compare at prices" if you run frequent promotions
- Review Cortex recommendations weekly during your first month to train the AI on your approval preferences
Migrating from Old System
If you previously used:
- Advanced Upsells → Your manual product mappings are now on the main Upsells page
- Basic Upsells → These are now Fallback upsells in the Upsell Display settings
All your existing configurations have been preserved during the migration.
Need Help?
If you encounter any issues or have questions about setting up upsells, please contact our support team.
Last updated: November 2025