> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ltv.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Klaviyo

> Sync segments and engagement data, import your existing design, and push campaigns back to Klaviyo

Klaviyo is LTV.ai's deepest integration. Connecting it gives LTV.ai your existing segments, engagement history, and email design, and lets you send campaigns through Klaviyo instead of through LTV.ai.

## Connect

<Steps>
  <Step title="Create a private API key in Klaviyo">
    In Klaviyo, go to **Settings > API keys** and create a private key with read access to profiles, segments, lists, metrics, campaigns, and templates. The key starts with `pk_`.
  </Step>

  <Step title="Paste it into LTV.ai">
    Go to **Settings > Connections** and open **Klaviyo**. Paste the key. LTV.ai validates it and shows the Klaviyo account name so you can confirm you connected the right one.
  </Step>
</Steps>

## What LTV.ai pulls in

<CardGroup cols={2}>
  <Card title="Segments and lists" icon="users">
    Your Klaviyo segments become selectable campaign audiences, with live contact counts.
  </Card>

  <Card title="Profiles" icon="address-card">
    Contact records are backfilled on connect, paced to respect Klaviyo's rate limits.
  </Card>

  <Card title="Engagement history" icon="chart-simple">
    Five engagement metrics including opens and clicks, with event properties retained for segmentation.
  </Card>

  <Card title="Consent status" icon="ban">
    Unsubscribes sync in both directions, continuously.
  </Card>
</CardGroup>

<Note>
  The initial profile and engagement backfill can take a while on large accounts. Segment counts populate first, engagement history fills in behind it.
</Note>

## Import your existing design

LTV.ai can read your existing Klaviyo campaigns and pull out the pieces worth keeping.

* **Headers and footers.** Import them directly as LTV.ai modules so generated campaigns match what your customers already receive. Open **Settings > Connections > Klaviyo** and choose the header and footer view.
* **Full campaign HTML.** Import a past campaign as a saved design and reuse it as a brand reference.

See [Headers and footers](/brand/headers-and-footers) and [Design Library](/create/design-library).

## Push a campaign to Klaviyo

Once a draft is finished, use **Push to Klaviyo** to create it as a campaign in your Klaviyo account. See [Send with LTV.ai or Klaviyo](/send/sending-routes) for how the two routes compare. The button appears in the draft editor and on proactive idea detail pages.

This is the right choice if your sending reputation, compliance review, or reporting already lives in Klaviyo. The alternative is sending through LTV.ai's own infrastructure, which requires setting up a sending domain. See [Set up your sending domain](/connect/sending-domain) and [Scheduling and sending](/send/scheduling).

<Warning>
  Campaigns pushed to Klaviyo are reported on in Klaviyo. LTV.ai attribution covers sends that go through LTV.ai. See [Attribution](/measure/attribution).
</Warning>