curl -X POST 'https://api.resend.com/broadcasts/id/duplicate' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0'

# POST /broadcasts/{id}/duplicate (Resend API)
Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-09-18

> Duplicate a broadcast

## Critical Gotchas
* All requests must include a `User-Agent` header (e.g. `User-Agent: my-app/1.0`) or the API returns HTTP 403.

## cURL
curl -X POST 'https://api.resend.com/broadcasts/id/duplicate' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| id | path | string | Yes | The Broadcast ID. |

## Response (200 OK)
{"id":"1f85ae38-f5b9-4c1f-8766-667a53970fea","object":"broadcast"}

---
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POST

POST /broadcasts/{id}/duplicate — Resend API

Resend API

Duplicate a broadcast

Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-09-18 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 137 tokens · Vary: Accept

Critical gotchas

All requests must include a User-Agent header (e.g. User-Agent: my-app/1.0) or the API returns HTTP 403.

cURL

curl -X POST 'https://api.resend.com/broadcasts/id/duplicate' \  -H "Authorization: Bearer $RESEND_API_KEY" \  -H 'User-Agent: my-app/1.0'

Parameters

Name	In	Type	Required	Description
id	path	string	Yes	The Broadcast ID.

Response 200 OK

{
  "id": "1f85ae38-f5b9-4c1f-8766-667a53970fea",
  "object": "broadcast"
}

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