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

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

> Retrieve a single thread email

## 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 GET 'https://api.resend.com/inboxes/inbox-id/threads/thread-id/emails/email-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. |
| email_id | path | string | Yes | The Email ID, as returned in `data[].id` by the list thre... |

## Response (200 OK)
{"id":"5b1a9f47-2c8d-4e6f-9a03-1d2e3f4a5b60","direction":"inbound"}

---
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GET

GET /inboxes/{inbox_id}/threads/{thread_id}/emails/{email_id} — Resend API

Resend API

Retrieve a single thread email

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
→ 194 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 GET 'https://api.resend.com/inboxes/inbox-id/threads/thread-id/emails/email-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.
email_id	path	string	Yes	The Email ID, as returned in `data[].id` by the list thread emails endpoint.

Response 200 OK

{
  "id": "5b1a9f47-2c8d-4e6f-9a03-1d2e3f4a5b60",
  "direction": "inbound",
  "from": "Ada Lovelace <[email protected]>",
  "to": [
    "[email protected]"
  ],
  "cc": [],
  "bcc": [],
  "reply_to": [
    "[email protected]"
  ],
  "subject": "Refund for order 1041",
  "message_id": "<[email protected]>",
  "html": "<p>Could I get a refund for order 1041?</p>",
  "text": "Could I get a refund for order 1041?",
  "attachments": [
    {
      "id": "9d4f2b81-6c3a-4e7d-8b12-0a5c6d7e8f90",
      "filename": "receipt.pdf",
      "size": 20841
    }
  ],
  "read": false,
  "received_at": "2026-08-05T14:03:11.229Z"
}

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