# Send (or schedule) a broadcast

`POST /v1/broadcasts/{id}/send`

- Authentication: required (Bearer token)
- Required scope: `api.broadcasts.manage`

Dispatches a draft (or scheduled) broadcast. With no body, or no
`scheduled_at`, it sends immediately. With a future RFC 3339 `scheduled_at`
it schedules the broadcast for delivery at that time.

Consent and suppression are enforced at send time: suppressed,
globally-unsubscribed, and (when the broadcast has a topic) topic-opted-out
recipients are filtered before SES hand-off. Poll
`GET /v1/broadcasts/{id}/results` for per-recipient outcomes.

A topic-less broadcast degrades its unsubscribe link to an account-wide
opt-out; sending one requires `acknowledge_no_topic: true`, otherwise the
call returns `422 no_topic_acknowledgement_required` with the warnings to
confirm. Supports the `Idempotency-Key` header so a retried send does not
double-fire. Returns `202` with the broadcast id and its accepted status.

## Path parameters

- `id` (string<uuid>, required) — Resource UUID. An unparseable id reads as a clean `404 not_found`.

## Request body

Content type: `application/json`

```json
{
  "scheduled_at": "2026-05-17T20:00:00Z",
  "acknowledge_no_topic": true
}
```

## Example request

```bash
curl -X POST 'https://api.sendops.dev/v1/broadcasts/00000000-0000-0000-0000-000000000000/send' \
  -H "Authorization: Bearer $SENDOPS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"scheduled_at":"2026-05-17T20:00:00Z","acknowledge_no_topic":true}'
```

## Responses

### 202 — Send accepted (immediate) or scheduled

Content type: `application/json`

```json
{
  "id": "00000000-0000-0000-0000-000000000000",
  "status": "sending"
}
```

### 401 — Missing, malformed, or unknown API key

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 403 — Key lacks the required scope or plan limit violated

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 404 — Resource not found

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 422 — Query parameter or path value failed validation

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 429 — Per-org rate limit exceeded

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```

### 500 — Unexpected server-side failure. The `code` is `internal_error`. The
`request_id` field can be quoted to SendOps support to investigate.

Content type: `application/problem+json`

```json
{
  "type": "https://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "code": "invalid_key",
  "request_id": "string",
  "retry_after": 0,
  "retention_days": 0,
  "scope": "string",
  "resource": "string",
  "errors": [
    {
      "field": "string",
      "reason": "string"
    }
  ]
}
```