API · Receiving

List Attachments

List attachments for a received email with download links that expire after one hour (requires full access).

GET/emails/receiving/{id}/attachmentsFull access

Request parameters

Parameter	Type	Description
`id` path · required	`string`	Opaque resource id.
`limit` query · optional	`integer` 1–100 Default: 20	Number of results to return. See Pagination.
`after` query · optional	`string`	Resource ID for the next page. Cannot be combined with before. See Pagination.
`before` query · optional	`string`	Resource ID for the previous page. Cannot be combined with after. See Pagination.

Request example

Set OPENSEND_BASE_URL=https://api.example.com and OPENSEND_API_KEY=os_replace_me on your server.

bash

curl -X GET "$OPENSEND_BASE_URL/emails/receiving/YOUR_id/attachments" \
  -H "Authorization: Bearer $OPENSEND_API_KEY"

Response

200 · application/json. Example IDs stand for IDs returned by your installation.

json

{
  "object": "list",
  "has_more": false,
  "data": [
    {
      "id": "YOUR_ID",
      "filename": "example",
      "size": 0,
      "content_type": "example",
      "content_disposition": "example",
      "content_id": "YOUR_CONTENT_ID",
      "download_url": "https://api.example.com/example",
      "expires_at": "2026-09-29T12:00:00Z"
    }
  ]
}

Behavior and errors

download_url is signed for one hour. Receiving data expires after 30 days.

Use a full-access credential. List responses are newest first; use has_more and cursor IDs to continue. Resource IDs belong to your team; an unknown or foreign resource returns 404. See authentication, errors, rate limits, and compatibility for the shared contract.