[Cotlet](https://cotlet.dev/index.md) · [Integrations](https://cotlet.dev/integrations.md) · [How it works](https://cotlet.dev/how-it-works.md) · [Use cases](https://cotlet.dev/use-cases.md) · [Security](https://cotlet.dev/security.md) · [For developers](https://cotlet.dev/for-developers.md) · [For automation agencies](https://cotlet.dev/for-agencies.md) · [Blog](https://cotlet.dev/blog.md) · [API docs](https://cotlet.dev/docs.md) · [Help center](https://cotlet.dev/help.md) · [Changelog](https://cotlet.dev/changelog.md) · [Contact](https://cotlet.dev/contact.md) · [Pricing](https://cotlet.dev/pricing.md) · [Sign up](https://cotlet.dev/signup)

# Schedule or launch campaign

> Activate a campaign flow immediately or at a date and time. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/postscript/schedule_campaign

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Activate a campaign flow immediately or at a date and time.

Postscript API: https://cotlet.dev/docs/api/postscript.md

`POST https://cotlet.dev/api/v1/postscript/campaigns/{campaign_id}/schedule`

Access: write. Confirm: waits for the user's OK before it runs.

Uses Schedule or Launch: Activate immediately starts the one-time flow now, Activate at a scheduled time and date starts it then. use_subscriber_time_zone sends at that local time in each region and works only for scheduled campaigns. Postscript holds campaign messages until waking hours in each subscriber's time zone. It sends texts to everyone in the Include segments. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `campaign_id` | string | yes | Campaign draft to activate. |
| `starts_at` | datetime | no | Date and time to start. Leave out to activate immediately. |
| `use_subscriber_time_zone` | boolean | no | Send at the given time in each subscriber's time zone. Default: false. |

## Request

**cURL**

```bash
curl -X POST https://cotlet.dev/api/v1/postscript/campaigns/campaign_8c41d2/schedule \
  -H "Authorization: Bearer $COTLET_API_KEY"
```

**Python**

```python
result = client.call("postscript", "schedule_campaign", {"campaign_id":"campaign_8c41d2"})
```

**Node.js**

```js
const result = await cotlet.call('postscript', 'schedule_campaign', {"campaign_id":"campaign_8c41d2"});
```

**CLI**

```bash
cotlet call postscript schedule_campaign --data '{"campaign_id":"campaign_8c41d2"}'
```

## Example response

```json
{
  "campaign_id": "f_51877",
  "status": "scheduled",
  "starts_at": "2026-10-28T11:00:00",
  "use_subscriber_time_zone": true
}
```

Previous: [Send preview](https://cotlet.dev/docs/api/postscript/send_preview.md)
Next: [Stop campaign](https://cotlet.dev/docs/api/postscript/stop_campaign.md)

---

Give your AI agents your signed-in browser.

**Product:** [Integrations](https://cotlet.dev/integrations.md) · [Use cases](https://cotlet.dev/use-cases.md) · [How it works](https://cotlet.dev/how-it-works.md) · [Pricing](https://cotlet.dev/pricing.md) · [Security](https://cotlet.dev/security.md)

**Resources:** [Blog](https://cotlet.dev/blog.md) · [API docs](https://cotlet.dev/docs.md) · [Help center](https://cotlet.dev/help.md) · [Changelog](https://cotlet.dev/changelog.md) · [GitHub](https://github.com/cotletdev/cotlet)

**Solutions:** [For developers](https://cotlet.dev/for-developers.md) · [For automation agencies](https://cotlet.dev/for-agencies.md)

**Company:** [About](https://cotlet.dev/about.md) · [AI info: company facts](https://cotlet.dev/ai-info.md) · [Contact](https://cotlet.dev/contact.md)

**Legal:** [Terms of service](https://cotlet.dev/terms) · [Privacy policy](https://cotlet.dev/privacy) · [Refund policy](https://cotlet.dev/refunds) · [Acceptable use](https://cotlet.dev/acceptable-use) · [Cookie policy](https://cotlet.dev/cookies) · [DPA](https://cotlet.dev/dpa) · [Subprocessors](https://cotlet.dev/subprocessors)

**Elsewhere:** [Status page](https://status.cotlet.dev) · [Cotlet on GitHub](https://github.com/cotletdev) · [Cotlet on X](https://x.com/cotletdev) · [Cotlet on LinkedIn](https://www.linkedin.com/company/cotletdev) · [Cotlet on Product Hunt](https://www.producthunt.com/products/cotlet) · [Cotlet on Crunchbase](https://www.crunchbase.com/organization/cotlet) · [Cotlet on SaaSHub](https://www.saashub.com/cotlet)

Cotlet.dev is built by Bart Krawczyk and Jake Slugocki, the founders of Take Group sp. z o.o., ul. Wincentego Janasa 4, 40-855 Katowice, Poland. KRS 0000871398, NIP 6342984273, VAT EU: PL6342984273. [About us](https://cotlet.dev/about.md)

Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.