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

# Copernica

> Connect your Copernica account to Eyk, so the results of your email campaigns land in BigQuery.

Connect Copernica to Eyk to collect the results of your email campaigns.

## What Eyk builds from this data

Eyk copies the results of your email campaigns and flows into your own BigQuery project. BigQuery is the data warehouse Eyk sets up for you. All email platforms land in the same table, so you can compare them side by side.

| Table in BigQuery | What it holds |
| - | - |
| `email_performance` | For each campaign and flow: emails received, opened and clicked, bounces and unsubscribes |

To open your BigQuery project, click **Google BigQuery** at the bottom of the Eyk sidebar.

## Before you start

You need:

* A Copernica account with access to the mailings you want to connect.
* Access to the **Sources** page in Eyk.

## Connect Copernica

**1. Open the source library**

In Eyk, go to **Sources** and click **Add new source**.

**2. Select Copernica**

In the **Data source library**, click **Add** next to **Copernica**.

**3. Sign in to Copernica**

Under **Account**, click **Sign in**. Sign in with the account from **Before you start** and give Eyk access.

![Copernica source form in Eyk with the Sign in button](https://mintcdn.com/eyk-data/bLMX2sfOr9PtO8G_/images/sources/copernica-eyk-form.png?fit=max\&auto=format\&n=bLMX2sfOr9PtO8G_\&q=85\&s=d1991e8ee58e6ea9d4f0ad02ef680595)

**4. Add the source**

Click **Add source**.

## Check it worked

In Eyk, go to **Sources**. Copernica is in the list with the text **Your data source is connected.** Eyk updates your BigQuery tables every night.

## Troubleshooting

> [accordion] Copernica shows Attention needed
>
> Open the Copernica source in Eyk and sign in again under **Account**.


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