get:
  tags:
    - Inbox
  operationId: GetInbox
  summary: Get an inbox
  description: Get an inbox available in the current account
  parameters:
    - $ref: '#/parameters/account_id'
    - name: id
      in: path
      type: number
      description: ID of the inbox
      required: true
  responses:
    200:
      description: Success
      schema:
          $ref: '#/definitions/inbox'
    404:
      description: Inbox not found
    403:
      description: Access denied
