---
title: "Unsubscribe All Inbound SMS Numbers"
slug: "unsubscribe-all-inbound-sms-numbers"
updated: 2025-07-25T15:19:58Z
published: 2025-07-25T15:19:58Z
canonical: "docs.mapp.com/unsubscribe-all-inbound-sms-numbers"
---

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

# Unsubscribe All Inbound SMS Numbers

## Goal

Automatically unsubscribe contacts from a Mapp Engage group when they send an incoming SMS to the group.

---

## Background Information

With this configuration:

- Every inbound SMS to the group triggers an unsubscribe.
- Messages are not filtered for specific keywords.
- Unsubscribes are recorded in group statistics.
- Mapp Engage sends unsubscribe instructions to the mobile number that sent the SMS.
- The system message `SysMsgUnsubscribeInstructions` includes a code and a link to a webpage where the recipient must enter the code to complete the unsubscribe process.

> [!NOTE]
> **Important:**
> 
> Each SMS group supports only one reply handling setting. If you use this unsubscribe method:
> 
> - Contacts cannot subscribe directly via SMS to this group.
> - SMS contacts must be imported into Mapp Engage via file upload.Your title goes here

---

## Prerequisites

You must enable the system message `SysMsgUnsubscribeInstructions `for SMS. For instructions, see System Messages via SMS.

---

## Procedure

1. Go to *Audience > Group Management > Groups*.
2. In the *Actions* column next to your group, click the edit icon.
3. Go to the **Reply Handling** tab.
4. Expand the *SMS* section.
5. From the *Replies* drop-down menu, select **Send Unsubscribe Instructions**.
6. Click **Save**.

## Related

- [Edit System Message](/edit-system-message-window.md)
- [How-to](/how-to-system-messages.md)