---
title: "POST /v1/mailboxes/{mailboxId}/threads/{threadId}/read"
method: POST
path: "/v1/mailboxes/{mailboxId}/threads/{threadId}/read"
---

# POST /v1/mailboxes/{mailboxId}/threads/{threadId}/read

`POST /v1/mailboxes/{mailboxId}/threads/{threadId}/read`

## Request

- The document declares no server URL.
- Auth: one of:
  - OAuth 2 (authorization code, authorization URL `/authorize`, token URL `/oauth/token`, scopes: `email.write`)
  - HTTP bearer

Mark a thread read. Idempotent — re-applying settles the same state.

## Path parameters

- `mailboxId` string, required
- `threadId` string, required

## Response `200`

The request has succeeded.

- TriageState: The thread's effective per-mailbox flags after the verb applied.
  - `unread` boolean, required
  - `archived` boolean, required
  - `trashed` boolean, required

## Other responses

- `401`: Access is unauthorized.
- `403`: Access is forbidden.
- `404`: The server cannot find the requested resource.
- `default`: An unexpected error response.

---

[API](https://skmtc.dev/foundermail/apis/mailbox.md) - [All operations](https://skmtc.dev/foundermail/apis/mailbox/llms.txt) - [OpenAPI document](https://skmtc.dev/foundermail/apis/mailbox/revisions/6a50628a86ed?raw)