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

# Klaviyo source

> Connect Klaviyo to Chartcastr for automated email marketing charts. Track open rates, click rates, revenue per email, and audience growth over time.

<Info>
  **Paid Feature** — Klaviyo is available on paid plans. [See pricing](https://chartcastr.com/pricing).
</Info>

## Overview

Use Klaviyo as a data source for Chartcastr. Connect your Klaviyo account and create charts for email performance and audience growth, then deliver them automatically to Slack or email.

Chartcastr connects with read-only OAuth access to Klaviyo data needed for chart generation.

## Setup

<Steps>
  <Step title="Connect your Klaviyo account">
    In Chartcastr, create a new source and choose **Klaviyo**. Complete the OAuth flow to grant read access.
  </Step>

  <Step title="Select a metric">
    Choose the email marketing metric you want to track. Each metric becomes its own source.
  </Step>

  <Step title="Create a connection">
    Pick a destination, set the schedule, and optionally enable AI summaries.
  </Step>
</Steps>

## Available Metrics

Chartcastr supports **8 pre-built Klaviyo metrics** across email performance and audience growth.

<CardGroup cols={2}>
  <Card title="Email" icon="envelope">
    Performance overview, opens, clicks, delivered volume, and bounces.
  </Card>

  <Card title="Audience" icon="users">
    List growth over time, total subscribers, and segment size comparisons.
  </Card>
</CardGroup>

## Authentication

Klaviyo uses OAuth 2.0 with PKCE for secure authentication. Chartcastr requests read-only access to:

* Account information
* Campaign and email event data
* Metrics and reporting
* Lists and segments
* Profile counts

Tokens are automatically refreshed in the background. If a token becomes invalid, you'll be prompted to reconnect.

## Next Steps

<CardGroup cols={2}>
  <Card title="View all available charts" icon="chart-bar" href="/integrations/sources/klaviyo/available-charts">
    See every campaign, flow, and audience metric available for charting.
  </Card>

  <Card title="Create a connection" icon="plug" href="/quickstart">
    Set up automated chart delivery from Klaviyo to Slack or email.
  </Card>

  <Card title="View all integrations" icon="grid" href="/integrations/sources">
    Browse all available data source integrations.
  </Card>
</CardGroup>