---
title: "Run Mailbox Placement Test"
method: POST
path: "/mailboxes/{mailbox_id}/health/placement-test"
tags: ["Mailboxes"]
---

# Run Mailbox Placement Test

`POST /mailboxes/{mailbox_id}/health/placement-test`

## Request

- Base URL: `https://be.graph8.com/api/v1`
- URL: `https://be.graph8.com/api/v1/mailboxes/{mailbox_id}/health/placement-test`
- Auth: HTTP bearer

Run an inbox-placement test for ONE mailbox. THIS CHARGES CREDITS.

Same charging path as `POST /placement/tests`: credits are held and
charged when the test is CREATED, not when it completes. Call
`POST /placement/tests/estimate` first if you want the figure - that one
is free.

One test per mailbox per 72 hours; a call inside the window is a 429
carrying `cooldown_until`. The test itself completes asynchronously - read
it back with `GET /placement/tests/{test_id}`.

Org admins and owners only, enforced by the handler itself.

## Path parameters

- `mailbox_id` integer, required: Mailbox id (mailboxes.id)

## Headers

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

## Response `200`

Successful Response

- ApiResponseMailboxDomainPayload
  - `data` MailboxDomainPayload, required: An open envelope for one provider/deliverability result. Open on purpose. These payloads are provider state and advisory reads whose contents grow with the product, and a dropped field reads as "nothing to report" rather than "we did not tell you". Every value passes through ``scrub_vendor_names`` on the way in.
  - `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)