Learn how to use CartBot with Downpay. With this integration, you’ll be able to add a security deposit with CartBot which can help make various selling strategies easier on Shopify.

On this page:

Overview of the Integration

Setting up CartBot with Downpay

• Installing and configuring CartBot
• Installing and configuring Downpay

Use Cases

• Using CartBot for add on fees for deposit products
• Using CartBot for deferred fees for rentals and demos

Overview of the Integration

With CartBot, you're able to add items to the cart automatically. Coupled with Downpay, this makes offering deferred payments easier.

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Setting up CartBot with Downpay

This section guides you through the steps to working with CartBot and Downpay, ensuring both apps work together seamlessly on your Shopify store.

Installing and configuring CartBot

1. Install CartBot from the Shopify App store.

Installing and configuring Downpay

1. Install Downpay from the Shopify App store (if you don't already have it).
2. Create a purchase option.
3. Check out our getting started guide for additional support.

Use Cases

Using CartBot for add on fees for deposit products

CartBot can be used to add fees to a product that is added to cart with Downpay.

Example of use case:

• Selling a product with a deposit and added an extra fee for processing

1. Create a new Cart Bot with the bot trigger Products
2. When setting up the section When a customer's cart includes for specific products, click set subscription option and select the name of the Downpay plan assigned to that product. This step will ensure CartBot will only add the fee if the product is added to cart with the Downpay deposit.
3. When setting up the section Then automatically add, select the fee product you wish to add to the cart.
4. In CartBot settings, adjust the wording of the popup consent for and ensure the box Allow customers to reject the additional items is unchecked if you want to make sure the fee cannot be avoided.

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Using CartBot for deferred fees for rentals and demos

CartBot is compatible with Downpay and we recommend using it when you'd like to auto add products to the cart and disallow removal.

Example of use cases:

• Selling a product from your store for a 20$ trial/rental and adding a 0$ deposit 100$ security deposit product to the cart in order to be able to store a card on file and have the ability to charge the customer if they do not return the product.

To complete setup for the above example

1. Set up Downpay and create a new 0$ upfront deposit purchase option and assign your Security deposit product.

2. Install CartBot and click Create a bot and use the Products bot trigger

3. Add the 20$ trial product in the When a customer's cart includes: box

4. Add the deposit product in the Then automatically add: box and click Set subscription option and choose the Downpay selling plan you've created

5. Review the settings in CartBot to make sure the behaviour suits your workflow and save the bot.

6. In CartBot settings, adjust the wording of the popup consent for and ensure the box Allow customers to reject the additional items is unchecked if you want to make sure the fee cannot be avoided.

The bot will now add the 0$ security deposit to the cart and on Checkout, you will see a due later total of the $100 that was deferred.

6. Should you also wish to place an authorized hold for the remaining balance, please review our Flow workflow on how to set this up.

To change the wording on the due later line at checkout and on your email notifications, review

Modify date and content display about deposits on your theme.

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Updated on: 08/01/2026