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+# Slack Service
+
+## On Slack
+
+To enable Slack integration you must create an incoming webhook integration on
+Slack:
+
+1. [Sign in to Slack](https://slack.com/signin)
+1. Visit [Incoming WebHooks](https://my.slack.com/services/new/incoming-webhook/)
+1. Choose the channel name you want to send notifications to.
+1. Click **Add Incoming WebHooks Integration**
+1. Copy the **Webhook URL**, we'll need this later for GitLab.
+
+## On GitLab
+
+After you set up Slack, it's time to set up GitLab.
+
+Go to your project's **Settings > Services > Slack** and you will see a
+checkbox with the following events that can be triggered:
+
+- Push
+- Issue
+- Merge request
+- Note
+- Tag push
+- Build
+- Wiki page
+
+Bellow each of these event checkboxes, you will have an input field to insert
+which Slack channel you want to send that event message, with `#general`
+being the default. Enter your preferred channel **without** the hash sign (`#`).
+
+At the end, fill in your Slack details:
+
+| Field | Description |
+| ----- | ----------- |
+| **Webhook**  | The [incoming webhook URL][slackhook] which you have to setup on Slack. |
+| **Username** | Optional username which can be on messages sent to slack. Fill this in if you want to change the username of the bot. |
+| **Notify only broken builds** | If you choose to enable the **Build** event and you want to be only notified about failed builds. |
+
+After you are all done, click **Save changes** for the changes to take effect.
+
+>**Note:**
+You can set "branch,pushed,Compare changes" as highlight words on your Slack
+profile settings, so that you can be aware of new commits when somebody pushes
+them.
+
+![Slack configuration](img/slack_configuration.png)
+
+[slackhook]: https://my.slack.com/services/new/incoming-webhook