Klaviyo and Squarespace.

Squarespace sites can send sign ups and, for stores, commerce activity to Klaviyo so you can run welcome, abandoned cart and post purchase flows. How the connection works and how much data syncs depends on your Squarespace setup and version, so confirm the current approach in the Squarespace and Klaviyo documentation before you build.

What Squarespace sends to Klaviyo.

• Form and newsletter sign ups. People who join through site forms or blocks, added to a Klaviyo list when the connection is set up.
• Customer data. Names and emails gathered at sign up or checkout, used to build and enrich profiles.
• Order activity. Where commerce data is supported, placed orders and their products, used for segmentation and post purchase messages.
• Cart activity. Carts left behind, available only where the connection reports them. Verify with a test.
• Product details. Catalogue information for emails, which varies by setup and how the connection is configured.

Flows it enables.

• Welcome series

  Starts when a new subscriber joins from the site. Keep it short and useful, with a clear first step.

• Abandoned cart

  Useful only if cart activity reaches Klaviyo. Test with a real browser session before turning it on.

• Post purchase

  Follows an order with thanks, usage tips and a review request after delivery.

• Newsletter and campaigns

  Use list and purchase data to send relevant campaigns rather than one blast to everyone.

Setup order.

1. 1. Confirm the supported route

   Check the current Squarespace and Klaviyo documentation for how your plan of site can connect and what it sends.

2. 2. Connect the accounts

   Follow the documented steps to link Squarespace with Klaviyo and authorise access.

3. 3. Point forms at the right list

   Make sure each form adds people to the intended Klaviyo list with clear consent wording.

4. 4. Test with a real order

   Sign up and place a test order, then confirm both appear on the Klaviyo profile.

5. 5. Check tracking after publishing

   Confirm any tracking works on the live site, not just in preview.

6. 6. Build the first flow

   Start with the welcome flow, then add cart and post purchase flows once their data is confirmed.

Common pitfalls.

• Assuming commerce activity syncs without testing it.
• Forms that add subscribers with no consent wording.
• Changing site structure and breaking form connections.
• Duplicate sign up tools feeding different lists.
• Relying on cart flows that never receive cart data.

Apps and Klaviyo both change their screens and options over time, so confirm names against what you see and check each app's own documentation for current details.

Want this wired up and tested for you? See our klaviyo email marketing service or book a free audit.