---
title: "Mailbox Operation"
method: POST
path: "/api/integrations/connections/{connection_id}/mailbox"
tags: ["Integrations"]
---

# Mailbox Operation

`POST /api/integrations/connections/{connection_id}/mailbox`

## Request

- Base URL: `https://api.agentstack.tech` (the document declares no server; this is the origin it was published from)
- URL: `https://api.agentstack.tech/api/integrations/connections/{connection_id}/mailbox`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

List, read, or send through a connected Gmail or Microsoft mailbox.

## Path parameters

- `connection_id` string, required

## Headers

- `Idempotency-Key` string

## Request body

- MailboxOpBody: list | get | send on a connected Gmail or Microsoft mailbox.
  - `op` string, required
  - `query` string
  - `message_id` string
  - `to` string
  - `subject` string
  - `text` string
  - `limit` integer

## Response `200`

Successful Response

- object

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `409`: Conflict
- `422`: Validation Error
- `429`: Too Many Requests
- `500`: Internal Server Error

---

[API](https://skmtc.dev/agentstack/apis/agentstack-core-api.md) · [All operations](https://skmtc.dev/agentstack/apis/agentstack-core-api/llms.txt) · [OpenAPI document](https://skmtc.dev/agentstack/apis/agentstack-core-api/revisions/8ecf3406e74a?raw)