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

# How Do You Suppress or Blacklist Specific End Users Across All Communication Channels

> Learn how to suppress or blacklist specific end users across multiple communication channels

## Problem

You want to prevent specific end users from receiving communications across multiple channels, including Push notifications, Email, WhatsApp, and SMS, on the MoEngage platform.

## Solution

Perform the following steps to manage channel suppression or request direct blocklisting through MoEngage Support.

### Suppressing End Users via the MoEngage Dashboard and API

#### Push Notifications

Perform the following steps to disable push notifications:

1. On the left navigation menu in the MoEngage dashboard, go to Settings > Channel > Push.
2. Click **Preference Management**.
3. Disable push notifications for your targeted end users.

<Note>
    For detailed steps, refer to [Preference Management for Push Notifications](https://www.moengage.com/docs/user-guide/campaigns-and-channels/mobile-push/getting-started-with-mobile-push/preference-management-for-push-notifications).
</Note>

#### Email

Perform one of the following steps:

* Update the user attribute **moe\_unsubscribe** to true through Server-to-Server (S2S) API calls.
* In the MoEngage dashboard, use the File Import tool to upload a CSV file that sets the user attribute **moe\_unsubscribe** to true for the targeted end users.

#### WhatsApp

Perform one of the following steps:

* Update the user attribute **moe\_wa\_subscription** to false through S2S API calls.
* In the MoEngage dashboard, use the File Import tool to upload a CSV file that sets the user attribute **moe\_wa\_subscription** to false for the targeted end users.

#### SMS

Perform one of the following steps:

* Update the user attribute **moe\_sms\_subscription** to false through S2S API calls.
* In the MoEngage dashboard, use the File Import tool to upload a CSV file that sets the user attribute **moe\_sms\_subscription** to false for the targeted end users.

### Requesting Bulk Blocklisting via MoEngage Support

Perform the following steps to have MoEngage block end users directly:

1. Gather the MoEngage IDs or unique identifiers for the end users you must block.
2. In the MoEngage dashboard, submit a support ticket.
3. Share your end user list directly within the support ticket for bulk blocking requests.

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