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---
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stage: Ecosystem
group: Integrations
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Mattermost notifications service **(FREE)**
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Use the Mattermost notifications service to send notifications for GitLab events
(for example, `issue created` ) to Mattermost. You must configure both [Mattermost ](#configure-mattermost-to-receive-gitlab-notifications )
and [GitLab ](#configure-gitlab-to-send-notifications-to-mattermost ).
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You can also use [Mattermost slash commands ](mattermost_slash_commands.md ) to control
GitLab inside Mattermost.
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## Configure Mattermost to receive GitLab notifications
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To use the Mattermost integration you must create an incoming webhook integration
in Mattermost:
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1. Sign in to your Mattermost instance.
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1. [Enable incoming webhooks ](https://docs.mattermost.com/developer/webhooks-incoming.html#enabling-incoming-webhooks ).
1. [Add an incoming webhook ](https://docs.mattermost.com/developer/webhooks-incoming.html#creating-integrations-using-incoming-webhooks ).
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1. Choose a display name, description and channel, those can be overridden on GitLab.
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1. Save it and copy the **Webhook URL** because we need this later for GitLab.
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Incoming Webhooks might be blocked on your Mattermost instance. Ask your Mattermost administrator
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to enable it on:
- **Mattermost System Console > Integrations > Integration Management** in Mattermost
versions 5.12 and later.
- **Mattermost System Console > Integrations > Custom Integrations** in Mattermost
versions 5.11 and earlier.
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Display name override is not enabled by default, you need to ask your administrator to enable it on that same section.
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## Configure GitLab to send notifications to Mattermost
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After the Mattermost instance has an incoming webhook set up, you can set up GitLab
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to send the notifications:
1. On the top bar, select **Menu > Projects** and find your project.
1. On the left sidebar, select **Settings > Integrations** .
1. Select **Mattermost notifications** .
1. Select the GitLab events to generate notifications for. For each event you select, input the Mattermost channel
to receive the notification. You do not need to add the hash sign (`#`).
1. Fill in the integration configuration:
- **Webhook**: The incoming webhook URL on Mattermost, similar to
`http://mattermost.example/hooks/5xo…` .
- **Username**: Optional. The username shown in messages sent to Mattermost.
To change the bot's username, provide a value.
- **Notify only broken pipelines**: If you enable the **Pipeline** event, and you want
notifications about failed pipelines only.
- **Branches for which notifications are to be sent**: The branches to send notifications for.
- **Labels to be notified**: Optional. Labels required for the issue or merge request
to trigger a notification. Leave blank to notify for all issues and merge requests.
- **Labels to be notified behavior**: When you use the **Labels to be notified** filter,
messages are sent when an issue or merge request contains _any_ of the labels specified
in the filter. You can also choose to trigger messages only when the issue or merge request
contains _all_ the labels defined in the filter.
