When it comes to growing an eCommerce brand, it's not just about having a powerful online store or sending promotional emails. It’s about connecting the two in a way that drives you personalized, automated customer experiences. That’s where Magento 2 and Klaviyo come together and make your work smoother.

In this blog, let’s look at what each tool does, how the integration works, and most importantly, how you can enhance your business effectively.

You have to know that Klaviyo is different. When you integrate it with Magento 2, it’s not just syncing contacts, it's syncing behavior. What someone browses about what they added to their cart, what they bought last month, and even what they might want next. That kind of data doesn’t just sit there, simply. It powers smarter and sends more personal messages that feel like they were written for one customer, not a crowd.

Compared to other email platforms that treat your store like just another list, Klaviyo becomes part of your store’s engine. It pulls in live product data, tracks what users are doing in real-time, and helps you automate everything from welcome emails to post-purchase follow-ups that are specially framed based on actions your customers actually take.

So when you connect Klaviyo with Magento 2, you’re not just adding a tool, you’re creating a marketing system that talks to your customers like a human and reacts instantly when they engage.

Pretty powerful, right?

Log in to your Magento 2 server and navigate to the root directory of your Magento application using your preferred command line tool. Run the command below to download the latest version of the Klaviyo extension from Packagist, a PHP package repository that helps manage extensions easily.

composer require klaviyo/magento2-extension

Next, enable the extension you just installed:

php bin/magento module: enable Klaviyo_Reclaim --clear-static-content

You’ll also need to enable additional modules. Run the following:

php bin/magento setup: upgrade

Once that’s done, head back to your Magento admin dashboard in your browser.
Check the output for

Module 'Klaviyo_Reclaim'

to make sure it’s active.
Finally, to keep your store’s CSS and JavaScript working properly, run this static content deployment command:

php bin/magento setup:static-content: deploy -f

That’s it. Composer installation is now complete. Move on to the configuration step.

In your Klaviyo account, navigate to the API Keys Tab

In a new tab, navigate to your Magento store admin.

Under Settings, click Stores > Configuration.

From the Klaviyo dropdown, click General.

Set Enable Klaviyo Extension to Yes.

Copy your six-digit Klaviyo public API key from the API keys tab and paste it in the corresponding box in Magento.

On the Klaviyo API keys tab, generate a new private key and then paste it into the corresponding box in Magento. Authenticating with your private API key will allow you to sync Newsletter subscriptions from Magento to Klaviyo.

• In Magento Admin, go to: Stores > Configuration > Klaviyo.
• Paste your Public and Private API Keys into the respective fields.
• Save the configuration.

• Go to: System > Extensions > Integrations.
• Click Add New Integration.
• Fill out the required fields and use your API credentials.
• Make sure OAuth is enabled and the required permissions are granted.
• Click Activate and allow access when prompted.
• Click Allow to be redirected to Klaviyo, where you'll complete the integration setup.

• Follow the prompts to complete the connection using the Magento integration you just activated.
• This will add the Magento 2 integration to the Klaviyo account associated with the API key you used for setup. If you are logged into multiple Klaviyo accounts and the correct account is not displaying, log out of any other sessions.

Once connected, Klaviyo will automatically sync:

• Customer profiles
• Order history
• Product catalog
• Shopping behavior

This makes it easy to segment audiences and trigger personalized emails.

• Viewed Product
• Started Checkout
• Placed Order
• Enable Webhooks

These webhooks allow Klaviyo to track customer behavior (cart updates, orders, etc.) in real time.

Always make sure your Klaviyo Magento extension is up to date to access the latest features and maintain secure functionality.

When our client wanted to sharpen their marketing, they knew email could do more than any other strategy. As they are selling high-quality woodworking and CNC tools, they have a loyal customer base, but not everyone is coming back or seeing the newest products. That’s when they looked into connecting Magento 2, the platform their store runs on, uninterrupted with Klaviyo.

Suddenly, they could see rich customer data about

What were people browsing, and what were they leaving in their carts?

And with that, marketing has started to increase. For example, a customer added a new router bit set to their cart but didn’t check out. A day later, that same customer received a friendly email reminding them of the item with a sharp image and a quick link to finish the purchase. That single message made the difference, and as a result, it turned the cart into a completed order.

It didn't stop there,

Klaviyo’s integration allowed our client to set up smart product recommendation emails, too. So when a customer bought a CNC machine, they’d later get a follow-up email showing accessories or upgrades related to their purchase. These emails weren’t sent manually. They were automated, personalized, and the timing to trigger the mail was also been set. Over a period of time, the team started to see more repeat purchases, more engagement, and even better feedback from customers.

All this happened when Klaviyo was pulling in product data, syncing order history, and building segments like “First-Time Buyers” or “High-Spend Customers.” This helped the team speak to each group without writing hugely just by sending separate emails. And the best part is that every campaign showed exactly how much revenue it brought so that the team could see what was working.

Since our client focuses on great tools that work well, it just made sense to have a marketing system that works without any chaos.

You could integrate Magento with Mailchimp or Constant Contact, but Klaviyo is built specifically for ecommerce. Here’s what sets it apart:

• Revenue Attribution – Track exactly how much money each email or SMS campaign generates (not just opens/clicks).
• Pre-Built Ecommerce Flows – Abandoned carts, welcome series, post-purchase follow-ups – Klaviyo’s templates are optimized for conversions right out of the box.
• Predictive Analytics – Klaviyo identifies high-value customers before they churn, so you can re-engage them proactively.
• Real-time Syncing: You need not manually export or import lists or order data.
• Smarter Automation: Trigger flows based on browsing behavior or order status.
• Revenue Tracking: You can actually see how much each email earned directly in Klaviyo.
• Catalog Feeds: Send emails with product blocks that auto-update with Magento data.

If you're using Magento and thinking about connecting it with Klaviyo, it's absolutely worth preferring. Once the setup is done, you won’t need to worry about sending out emails manually or tracking who did what. Klaviyo takes care of all that in the background, whether it’s a cart reminder, a welcome message, or a product recommendation.

It feels like you’ve got an extra team member quietly working behind the scenes, making sure your customers stay engaged and come back for more. From our experience with our client, the connection that turned regular email marketing into something much more powerful and a lot less time-consuming.

Pairing Magento with Klaviyo paves the way for smarter and more personal marketing. And when it is done right, it doesn’t just bring in more sales, it helps build stronger relationships with your customers. For businesses that want a smooth, stress-free setup, working with a Magento integration service makes the whole process easier and more efficient.

If you're ready to take your store’s marketing to the next level, this is one move that truly pays off.