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How to Integrate Klaviyo with Mailchimp

Updated on:
June 5, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to connect your Klaviyo account to Mailchimp in minutes.

Quick summary

The Klaviyo–Mailchimp integration lets you sync your email lists directly from the Klaviyo dashboard using a simple API key connection. Once set up, both platforms share audience data instantly, eliminating manual list exports and keeping your email marketing workflows in sync.


Steps

  1. Head over to the left-side panel and click your Profile at the bottom-left corner.
  2. Select Integrations from the profile menu options.
  3. Navigate to the top-right corner and click Add Integration.
  4. Use the search bar above the integration categories and type Mailchimp.
  5. Select Mailchimp from the search results.
  6. Enter your Mailchimp API key into the input field and click Connect to Mailchimp to proceed.
  7. In the advanced integration settings, choose your desired flow.
  8. Click Complete Setup at the top-right corner of your screen.
  9. Your Klaviyo account will be integrated instantly with Mailchimp upon completion.

📌 Why this matters

Integrating Klaviyo with Mailchimp allows e-commerce and marketing teams to unify their audience data across both platforms without manual imports or third-party middleware. This native integration ensures that contact lists, segments, and subscriber activity sync automatically, reducing data silos and saving hours of manual work. Marketers who connect Klaviyo to Mailchimp can trigger personalized email flows in Klaviyo based on Mailchimp list membership, improving campaign targeting and revenue attribution. For teams transitioning from Mailchimp to Klaviyo or running both tools in parallel, this integration is an essential step in building a reliable, scalable email marketing stack.
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