---
title: Blocklist import
slug: campaign/docs/blocklist-import
docTags: 
createdAt: 2026-07-20T15:45:38.523Z
---

When you initially import recipients into Optimizely Campaign, or if you frequently import recipients from a local list, you should also import a blocklist. This function lets you import a CSV file with blocked recipients or wildcard blocklist entries into your client. A blocklist entry can be a complete email address or contain placeholders. See also: [Wildcards](docId\:bN4TdJLisJkf2KjuWe-wA).

To import a blocklist, perform the following steps:

**Prerequisite**: A CSV file that contains blocklist entries.

1. Open the Optimizely Campaign [menu](docId\:PmNPgvNucBrAG5Rw8f41f) and select **Blocklist** > **Import**.
2. Click **Browse...** and select a CSV file from your computer that contains the blocklist entries.
3. Click **Import Options**. The **Preview** area shows entries encountered in the CSV file. The **Rule** column must contain the respective email addresses or wildcards to be blocked. Only this first column is imported.
4. If the columns are not displayed correctly, select an encoding type from the **File Charset** list by changing the separator and escape characters.
5. If the first line of the CSV file contains a table head with column designations, select **Yes** in the **Skip First Row** drop-down list.
6. Click **Refresh Preview** to check your settings.
7. Click **Reason**. Optionally, you can enter a reason for blocklisting the imported entries. The reason you enter here applies to all imported entries.
8. Click **Finished**.

:::hint{type="info"}
**Tip**

You can also import and export blocklist entries automatically on a regular basis, for example to synchronize them with an external distribution list. For more information, see [Scheduled jobs](docId\:Dz5xyaQu1G-CVn9CBtLvR).
:::