---
title: "Send a campaign immediately"
method: POST
path: "/campaigns/{id}/send"
tags: ["Campaigns"]
---

# Send a campaign immediately

`POST /campaigns/{id}/send`

Schedules a draft campaign for immediate sending. The campaign must:
- Not already be sent or scheduled
- Have at least one list assigned
- The user must not be in a warmup/throttle period

All existing abuse prevention applies automatically: content approval workflow,
sending throttles, spam detection, and bounce rate monitoring.

## Response `200`

Campaign scheduled for sending

- Campaign
  - `id` integer
  - `title` string, required
  - `subject` string, required
  - `preview_text` string, nullable — Inbox preview snippet shown beneath the subject line in most email clients.
  - `html` string, required
  - `from_name` string, required
  - `from_email` string, email, required
  - `scheduled_at` string, date-time, nullable
  - `sent_at` string, date-time, nullable
  - `timezone` string
  - `created_at` string, date-time
  - `updated_at` string, date-time

## Other responses

- `400` — Campaign has no lists assigned
- `403` — Forbidden (cannot send; a large campaign is already scheduled and must finish first)
- `409` — Campaign already sent or scheduled

---

[API](https://skmtc.net/sendfox/apis/sendfox-api.md) · [All operations](https://skmtc.net/sendfox/apis/sendfox-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sendfox/sendfox-api/versions/ea591a7644e7/schema)