> For the complete documentation index, see [llms.txt](https://threadly.gitbook.io/threadly/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://threadly.gitbook.io/threadly/actions/calendar-actions.md).

# Calendar Actions

Calendar Actions are a type of Threadly Action that embed a booking experience directly in your Slack message. Instead of sending a scheduling link and hoping someone clicks it, recipients pick a time in a Slack modal — without opening a browser tab.

Available on **Premium**.

## Supported calendar providers

| Provider             | Booking experience                                              |
| -------------------- | --------------------------------------------------------------- |
| **Cal.com**          | Fully in-Slack — availability shown and confirmed inside Slack  |
| **HubSpot Calendar** | Fully in-Slack — powered by your HubSpot meeting scheduler      |
| **Calendly**         | Opens Calendly in browser (via Website CTA — no in-Slack modal) |

## How it works for recipients

1. They see a **"Book a Meeting"** button (or whatever label you choose) in the Threadly message.
2. Clicking it opens a **Slack modal** showing your live availability.
3. They select a time and confirm.
4. The meeting is booked — both parties get a confirmation and calendar invite.

No context-switching. No scheduling ping-pong.

## When to use Calendar Actions

Calendar Actions work best anywhere a scheduling link would — but with higher conversion because everything stays in Slack:

* Sales follow-up calls in Slack Connect channels
* Customer onboarding, QBRs, and training sessions
* Support escalations that need a live call
* Internal syncs, reviews, and handoffs
* Any [Workflow](/threadly/workflows/introduction-to-workflows.md) message where "book time" is the next step

## Setting up a Calendar Action

### Cal.com

See the full guide: [Cal.com Integration](/threadly/integrations/cal.com.md)

### HubSpot Calendar

See the **HubSpot Calendar Actions** section in the [HubSpot Integration](/threadly/integrations/hubspot.md) guide.

## Adding a Calendar Action to a message

Once created, attach the calendar action to any message:

1. In the message composer, click **Add Action**.
2. Select your calendar action from the list.
3. The booking button appears at the bottom of the message.

Calendar Actions can also be added to [Workflow](/threadly/workflows/introduction-to-workflows.md) send steps, so booking prompts can be automated.