# Integrations (/docs/workflows/nodes/integrations)

> Connect workflows to any other tool.

## Custom API [#custom-api]

Sends information to, or fetches it from, any other online system.

- **URL** and **Method** (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS).
- **Query Params** and **Headers**.
- **Body**: JSON key/value, JSON free-form, form key/value, or raw text.
- **Timeout** in seconds (default 30).

![Custom API node on the canvas](/docs-images/workflows/nodes/custom-api-card.jpg)

![Custom API settings](/docs-images/workflows/nodes/custom-api.jpg)

## Slack Message [#slack-message]

Posts a message to a Slack channel.

- **Incoming webhook URL**: create one in Slack under app settings, Incoming Webhooks, then pick the channel.
- **Message**, with details inserted using `@`.

![Slack Message node on the canvas](/docs-images/workflows/nodes/slack-message-card.jpg)

![Slack Message settings](/docs-images/workflows/nodes/slack-message.jpg)

## Enroll in Instantly [#enroll-in-instantly]

Adds a lead to an Instantly email campaign.

- **Instantly integration** and **Campaign**.
- **Email**, plus optional first name, last name, company, and custom variables.
- Sending schedule, mailboxes, and warm-up are managed in Instantly.

![Enroll in Instantly node on the canvas](/docs-images/workflows/nodes/enroll-in-instantly-card.jpg)

![Enroll in Instantly settings](/docs-images/workflows/nodes/enroll-in-instantly.jpg)