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

# Slack

> Learn how to send automated messages to Slack

## What is Slack?

[Slack](https://slack.com) is a collaborative communication platform for teams, offering real-time messaging, file sharing, and integration with various tools. It organizes conversations into channels based on topics, projects, or teams, fostering efficient and organized team communication.

## Connect Slack to Hyperline

You can connect Slack as a native integration in Hyperline to receive automated notifications directly in your Slack channels.

To connect Slack:

1. Go to **Settings > Integrations**
2. Find **Slack** in the list of available integrations
3. Click **Connect** and authorize Hyperline to access your Slack workspace
4. Once connected, you can start creating notification rules

## Notification rules

Notification rules let you automatically send Slack messages when specific events happen in Hyperline. Each rule combines a **trigger** (the event), a **Slack channel** (where to send), and a **message template** (what to send).

To create a notification rule:

1. Go to **Settings > Integrations > Slack > Notifications**
2. Click **Add rule**
3. Give the rule a **name**
4. Select a **trigger** from the list of available events
5. Choose the **Slack channel** where the notification should be sent
6. Customize the **message template** using variables
7. Save the rule

<Note>
  Hyperline automatically attempts to join public Slack channels when you configure them in a notification rule. For private channels, you'll need to manually invite the Hyperline app to the channel.
</Note>

### Available triggers

You can create notification rules for the following events:

| Trigger                       | Description                                    |
| ----------------------------- | ---------------------------------------------- |
| Approval requested            | An approval step has been requested            |
| Approval request approved     | An approval step has been approved             |
| Approval request rejected     | An approval step has been rejected             |
| Bank account errored          | A bank account encountered an error            |
| Data loader failed            | A data loader job has failed                   |
| Invoice chargeback            | An invoice has been charged back               |
| Invoice errored               | An invoice encountered an error                |
| Invoice late                  | An invoice is overdue                          |
| Invoice settled               | An invoice has been fully paid                 |
| Quote signed                  | A quote has been signed                        |
| Quote viewed                  | A quote has been viewed                        |
| Subscription activated        | A subscription has been activated              |
| Subscription contract renewed | A subscription contract has been renewed       |
| Subscription renewed          | A subscription has been renewed                |
| Subscription trial ended      | A subscription trial period has ended          |
| Aggregator threshold crossed  | An aggregator usage threshold has been crossed |

### Message template

Each notification rule includes a customizable message template. You can format the message using **Markdown** and insert **dynamic variables** that will be replaced with actual values when the notification is sent.

Variables are inserted using the `{{variableName}}` syntax. The available variables depend on the selected trigger — for example, an invoice trigger provides variables like `{{invoiceNumber}}` and `{{invoiceAmount}}`, while a quote trigger provides `{{quoteNumber}}` and `{{quoteValue}}`.

You can also use **custom properties** in your message templates (e.g. `{{myCustomProperty}}`).

<Note>
  Hyperline automatically attempts to join public Slack channels when you configure them in a notification rule. For private channels, you'll need to manually invite the Hyperline app to the channel.
</Note>