# M13 - Download an attachment

Call FrequencyRecommended usage: Synchronous only - At each message attachment downloadMaximum usage: Synchronous only - At each message attachment download

Endpoint: GET /api/inbox/threads/{attachment_id}/download

## Path parameters:

  - `attachment_id` (string, required)
    The identifier of the attachment to retrieve.

## Query parameters:

  - `shop_id` (integer)
    Use this parameter when your user has access to several shops. If not specified, the shop_id from your default shop will be used.