---
title: "Upload Inbox Draft Attachment"
method: POST
path: "/inbox/drafts/attachments"
tags: ["AI Inbox"]
---

# Upload Inbox Draft Attachment

`POST /inbox/drafts/attachments`

## Request

- Base URL: `https://be.graph8.com/api/v1`
- URL: `https://be.graph8.com/api/v1/inbox/drafts/attachments`
- Auth: HTTP bearer

Attach a file to an existing email draft (multipart: `file`, `draft_id`).

Returns `token`, `key`, `name`, `size`, `contentType`. The draft must
already exist and the caller must be allowed to send from its mailbox - a
403 otherwise; 413 over 25 MB. Nothing is sent: the file rides along when
the draft is.

Calls the app handler's own body (`__wrapped__`): the app wraps it in a
per-process rate limiter bound to the APP's state, and this API's own
rate limit applies instead.

## Headers

- `Authorization` string, nullable
- `X-Target-Org-Id` string, nullable

## Response `201`

Successful Response

- ApiResponseInboxPayload
  - `data` InboxPayload, required: An open envelope for a comment, an assignment or a workspace. Open because a comment carries attachment refs and mention metadata that grow, and because an assignment result reports per-assignee outcomes.
  - `pagination` PaginationMeta
    - `page` integer, required: Current page number (1-indexed)
    - `limit` integer, required: Items per page
    - `total` integer, required: Total number of items
    - `has_next` boolean, required: Whether there are more pages
    - `next_cursor` string, nullable: Opaque cursor for the next page; null when there are no more items. Pass it back as the `cursor` query param to fetch the following page without computing page numbers.
    - `total_available` integer, nullable: Search endpoints only: how many records really match, when known. Can be larger than `total`, which is capped at the 10,000 results that can be paged. For company search this is a distinct-company estimate. Null when unknown; absent outside search.
    - `total_is_lower_bound` boolean, nullable: Search endpoints only: true when more records match than `total` shows (the result set is larger than the 10,000 results that can be paged). Absent outside search.
    - `notes` string[], nullable: Search endpoints only: plain-language notes about the result, e.g. that more records match than can be paged, or that a reversed `between` range was put in order.

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/graph8/apis/graph8-developer-api.md) · [All operations](https://skmtc.dev/graph8/apis/graph8-developer-api/llms.txt) · [OpenAPI document](https://skmtc.dev/graph8/apis/graph8-developer-api/revisions/2e7cfa0ca921?raw)