curl -X DELETE 'https://api.resend.com/inboxes/inbox-id/threads/thread-id' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0'

# DELETE /inboxes/{inbox_id}/threads/{thread_id} (Resend API)
Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-10-20

> Remove an existing inbox thread

## 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 DELETE 'https://api.resend.com/inboxes/inbox-id/threads/thread-id' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| inbox_id | path | string | Yes | The Inbox ID or the inbox email address, such as `support... |
| thread_id | path | string | Yes | The Thread ID. |

## Response (200 OK)
{"object":"inbox_thread","id":"4d8e2a1c-9b3f-4c6d-8a21-3e5f7c9c0d12","deleted":true}

---
Need an API key? Get one at https://resend.com/signup

DELETE

DELETE /inboxes/{inbox_id}/threads/{thread_id} — Resend API

Resend API

Remove an existing inbox thread

Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 167 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 DELETE 'https://api.resend.com/inboxes/inbox-id/threads/thread-id' \  -H "Authorization: Bearer $RESEND_API_KEY" \  -H 'User-Agent: my-app/1.0'

Parameters

Name	In	Type	Required	Description
inbox_id	path	string	Yes	The Inbox ID or the inbox email address, such as `[email protected]`. A value that contains `@` must be a valid email address, and any other value must be a UUID, or the request returns a 422. The address match is case-insensitive and never falls back to the inbox `name`. An address that matches no inbox returns a 404.
thread_id	path	string	Yes	The Thread ID.

Response 200 OK

{
  "object": "inbox_thread",
  "id": "4d8e2a1c-9b3f-4c6d-8a21-3e5f7c9c0d12",
  "deleted": true
}

Get a free Resend API key → sponsored

Affiliate link - we may earn a commission, at no extra cost to you.