> For the complete documentation index, see [llms.txt](https://docs.perkville.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.perkville.com/features/agency/suppressions.md).

# Suppressions

**How to Add an Advertiser Suppression List to the Perkville Agency Platform**

#### Overview

The Advertiser Suppression List ensures that an advertiser's ads are not displayed to any email addresses included in the list. This list is uploaded to the Perkville Agency Platform in CSV format.

#### Format Requirements

* The suppression list must be in CSV format.
* Each row should contain a single email address.
* A header is not required. However, if present, it must be "email".

#### Steps to Upload an Advertiser Suppression List

1. **Log in to the Perkville Agency Platform**
   * Navigate to the agency dashboard and access the Advertiser Suppression List section.
2. **Select the Advertiser**
   * Choose the advertiser to which the suppression list will apply.
3. **Upload the CSV File**
   * Click the "Upload Suppression List" button.
   * Select the CSV file containing the suppression list.
   * Ensure the file meets the format requirements mentioned above.
4. **Confirm and Submit**
   * Review the uploaded list for any errors.
   * Click "Submit" to finalize the upload.
5. **Verification and Activation**
   * The platform will process the list and validate the format.
   * Once processed, the suppression list will be applied, preventing ads from being displayed to any email in the list.

#### Notes

* Ensure the email addresses are accurate to prevent unintended ad suppression.
* Updates to the suppression list require re-uploading a new file with the desired changes.
* The suppression list applies only to the selected advertiser.

For further assistance, contact Perkville support.


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