# Customer.io Overview Connect your Customer.io account to add or remove customers in sequences based on purchases and automations in Spiffy. **Here’s a rundown of the powerful features you will have available:** - **Customer Information Sync** Basic customer info will automatically sync to Customer.io - **Checkout & Purchase Automation** Set up automation triggers for checkouts, upsells, billing and more, to start a sequence in Customer.io [Learn More →](https://university.spiffy.co/automation/intro-to-automations.md) ## How to Connect Customer.io Before getting started, you will need a few things from your Customer.io account, your: - **Site ID** - **Tracking API Key** - **App API Key** You can find these in Customer.io under **Settings** > **Workspace Settings**. Scroll down to Advanced and select **API and webhook credentials**. Inside the API credentials page, you will see tabs for **Tracking API keys** and **App API keys**. On the **Tracking API keys** tab, create a new **Tracking API Key** by selecting **Create Track API Key**. Give it a descriptive name, so you know this key was created specifically to connect to Spiffy. Click ****Create Track API Key**** again to generate a **Tracking API Key** and **Site ID**. **Copy** and **save** the **Tracking API Key** and **Site ID** somewhere secure. Next, on the **App API keys** tab, select **Create App API Key**. Give it a descriptive name, so you know this key was created specifically to connect to Spiffy. **Copy** and **save** this somewhere secure. **Important**: Once you close the window in Customer.io that shows your App API key, you will not be able to view it again. Back in Spiffy, click **Account Settings** > **[Integrations](https://app.spiffy.co/settings/integrations)** and select **Customer.io** from the list of available integrations. In the box that appears, input your **Site ID**, **Tracking API Key** and **App API Key**. Select **Enable Customer.io** You’ve now connected your Customer.io account to Spiffy, don’t forget to set up **Automations**! **[Learn more about Automations →](https://university.spiffy.co/automation/intro-to-automations.md)** ## Automation Actions Once you’ve connected your Customer.io account you will now be able to: - Add to / Remove from a Segment