# BeginImpressionRegion()

Denotes the beginning of a region to track with impression tracking.

:::note
Impression regions are only supported in outbound messages. CloudPages don't support impression regions.
:::

## Availability

<table>
  <tr>
    <td>Marketing Cloud Engagement</td>
    <td>✅ Yes</td>
  </tr>
  <tr>
    <td>Marketing Cloud Next</td>
    <td>✅ Yes</td>
  </tr>
</table>

## Syntax

```
BeginImpressionRegion(regionName)
```

The `BeginImpressionRegion()` function has one parameter:

- `regionName` (string): Required. The name to assign to the impression region.

## Usage

To call this function, specify a name for the impression region.

```
%%=BeginImpressionRegion("Header")=%%
```

The system begins an impression tracking region called "Header." The function has no output.

Use the `EndImpressionRegion()` function to close the impression region. If the impression region isn’t closed by the end of the email, the system closes it for you automatically.

## See Also

- [EndImpressionRegion()](/docs/marketing/marketing-cloud-ampscript/references/mc-ampscript-content/mc-ampscript-reference-content-end-impression-region.md)
- *Salesforce Help*: [Track Content Performance with Impression Regions](https://help.salesforce.com/s/articleView?id=mktg.mktg_content_impression_regions.htm)