> ## Documentation Index
> Fetch the complete documentation index at: https://docs.partnero.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Connect Klaviyo to your newsletter referral program
When [creating a newsletter referral program](/knowledge-base/newsletter-referral-programs/how-to-setup-a-newsletter-referral-program), you will be prompted to select your email service provider.
To connect Klaviyo:
1. Set up a newsletter referral program and select **Klaviyo** as the ESP upon creation:
2. Click **Create**.
3. Under **Program Settings**, click **Authorize** next to Klaviyo integration:
4. Enter your Klaviyo API Key. Create a **Private** **full-access** API key. [Here's how to do it](https://help.klaviyo.com/hc/en-us/articles/7423954176283).
5. Click **Connect**.
6. Select the subscriber group that will participate in your referral program as well as the destination group where newly referred subscribers should be added. Click **Update**:
That's it! Your subscriber list will be synchronized, and every subscriber will be assigned a unique referral link.
> Next: [Insert a referral section to your Klaviyo newsletter](/knowledge-base/newsletter-referral-programs/insert-a-referral-section-to-your-klaviyo-newsletter)
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