---
title: "Making a Segment Mandatory for Sendout"
slug: "mandatory-selection-for-sendout"
updated: 2026-07-30T10:54:51Z
published: 2026-07-30T10:54:51Z
canonical: "docs.mapp.com/mandatory-selection-for-sendout"
---

> ## 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.

# Making a Segment Mandatory for Sendout

## Goal

Ensure that a segment is mandatory for every sendout in a group, so messages are always sent to a defined target audience.

---

## Background Information

Mapp Engage provides different ways to prepare sendouts to groups.

You can either:

- Use multiple groups, where each group represents a fixed set of recipients and is selected directly for sendout.
- Use one central group that contains all recipients and apply segments to define smaller target audiences for each sendout.

When you work with a central group, the group itself is not intended to receive messages. In this setup, segments are required to limit the recipients for each sendout. To prevent sendouts without a segment, you can configure the group so that a segment is always mandatory.

During sendout, Mapp Engage checks whether a segment is applied. If no segment is set, the sendout is blocked, and an error message is displayed.

This behavior applies to:

- Group sendouts
- Split sendouts

It does not apply to group sendouts that are initiated by an automation.

---

## Procedure

1. Navigate to *Audience > Group Management > Groups*.
2. Edit the group you want to configure.
3. Open the **Sendout Options** tab.
4. Expand the **Mandatory Fields for Sendout** section.
5. In the **Selection** area, select **Yes**.
6. Click **Save**.

> [!NOTE]
> Note
> 
> In the user interface, segments are still labeled **Selection**. The **Selection** setting therefore controls whether a segment is mandatory.

For every sendout in this group, applying a segment is mandatory. A sendout without a segment is not possible.

## Related

- [Message Creation: Configuration (Email)](/configuration-for-sendout.md)