Add attachment

Namespace: microsoft.graph

Use this API to add an attachment to a message.

An attachment can be one of the following types:

All these types of attachment resources are derived from the attachment resource.

You can add an attachment to an existing message by posting to its attachments collection, or you can add an attachment to a message that is being created and sent on the fly.

This operation limits the size of the attachment you can add to under 3 MB.

This API is available in the following national cloud deployments.

Global service US Government L4 US Government L5 (DOD) China operated by 21Vianet

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

Permission type Least privileged permissions Higher privileged permissions
Delegated (work or school account) Mail.ReadWrite Not available.
Delegated (personal Microsoft account) Mail.ReadWrite Not available.
Application Mail.ReadWrite Not available.

HTTP request

Attachments for a message in a user's mailbox.

POST /me/messages/{id}/attachments
POST /users/{id | userPrincipalName}/messages/{id}/attachments

Attachments for a message contained in a top level mailFolder in a user's mailbox.

POST /me/mailFolders/{id}/messages/{id}/attachments
POST /users/{id | userPrincipalName}/mailFolders/{id}/messages/{id}/attachments

Attachments for a message contained in a child folder of a mailFolder in a user's mailbox. The example below shows one level of nesting, but a message can be located in a child of a child and so on.

POST /me/mailFolders/{id}/childFolders/{id}/.../messages/{id}/attachments/{id}
POST /users/{id | userPrincipalName}/mailFolders/{id}/childFolders/{id}/messages/{id}/attachments/{id}

Request headers

Name Type Description
Authorization string Bearer {token}. Required.
Content-Type string Nature of the data in the body of an entity. Required.

Request body

In the request body, supply a JSON representation of Attachment object.

Response

If successful, this method returns 201 Created response code and Attachment object in the response body.

Example (file attachment)

Request

Here is an example of the request.

POST https://graph.microsoft.com/v1.0/me/messages/AAMkpsDRVK/attachments
Content-type: application/json

{
  "@odata.type": "#microsoft.graph.fileAttachment",
  "name": "smile",
  "contentBytes": "R0lGODdhEAYEAA7"
}

In the request body, supply a JSON representation of attachment object.

Response

Here is an example of the response.

HTTP 201 Created
Content-type: application/json

{
    "id": "AAMkADNkN2R",
    "lastModifiedDateTime": "2017-01-26T08:48:28Z",
    "name": "smile",
    "contentType": "image/gif",
    "size": 1008,
    "isInline": false,
    "contentId": null,
    "contentLocation": null,
    "contentBytes": "R0lGODdhEAYEAA7"
}

Example (item attachment)

Request

Here is an example of the request.

POST https://graph.microsoft.com/v1.0/me/messages/AAMkpsDRVK/attachments
Content-type: application/json

{
  "@odata.type": "#microsoft.graph.itemAttachment",
  "name": "Holiday event",
  "item": {
    "@odata.type": "microsoft.graph.event",
    "subject": "Discuss gifts for children",
    "body": {
      "contentType": "HTML",
      "content": "Let's look for funding!"
    },
    "start": {
      "dateTime": "2016-12-02T18:00:00",
      "timeZone": "Pacific Standard Time"
    },
    "end": {
      "dateTime": "2016-12-02T19:00:00",
      "timeZone": "Pacific Standard Time"
    }
  }
}
Response

Here is an example of the response. Note: The response object shown here might be shortened for readability.

HTTP/1.1 201 Created
Content-type: application/json

{
  "id":"AAMkADNkNJp5JVnQIe9r0=",
  "lastModifiedDateTime":"2016-12-01T22:27:13Z",
  "name":"Holiday event",
  "contentType":null,
  "size":2473,
  "isInline":false
}