APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.
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
POST /me/messages/{id}/attachments
POST /users/{id|userPrincipalName}/messages/{id}/attachments
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.
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Beta.Models;
var requestBody = new Attachment
{
OdataType = "#Microsoft.OutlookServices.FileAttachment",
Name = "name-value",
ContentType = "contentType-value",
IsInline = false,
AdditionalData = new Dictionary<string, object>
{
{
"contentLocation" , "contentLocation-value"
},
{
"contentBytes" , "contentBytes-value"
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Me.Messages["{message-id}"].Attachments.PostAsync(requestBody);
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
// THE CLI IS IN PREVIEW. NON-PRODUCTION USE ONLY
mgc-beta users messages attachments create --user-id {user-id} --message-id {message-id} --body '{\
"@odata.type": "#Microsoft.OutlookServices.FileAttachment",\
"name": "name-value",\
"contentType": "contentType-value",\
"isInline": false,\
"contentLocation": "contentLocation-value",\
"contentBytes": "contentBytes-value"\
}\
'
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
Attachment attachment = new Attachment();
attachment.setOdataType("#Microsoft.OutlookServices.FileAttachment");
attachment.setName("name-value");
attachment.setContentType("contentType-value");
attachment.setIsInline(false);
HashMap<String, Object> additionalData = new HashMap<String, Object>();
additionalData.put("contentLocation", "contentLocation-value");
additionalData.put("contentBytes", "contentBytes-value");
attachment.setAdditionalData(additionalData);
Attachment result = graphClient.me().messages().byMessageId("{message-id}").attachments().post(attachment);
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Models\Attachment;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new Attachment();
$requestBody->setOdataType('#Microsoft.OutlookServices.FileAttachment');
$requestBody->setName('name-value');
$requestBody->setContentType('contentType-value');
$requestBody->setIsInline(false);
$additionalData = [
'contentLocation' => 'contentLocation-value',
'contentBytes' => 'contentBytes-value',
];
$requestBody->setAdditionalData($additionalData);
$result = $graphServiceClient->me()->messages()->byMessageId('message-id')->attachments()->post($requestBody)->wait();
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Import-Module Microsoft.Graph.Beta.Mail
$params = @{
"@odata.type" = "#Microsoft.OutlookServices.FileAttachment"
name = "name-value"
contentType = "contentType-value"
isInline = $false
contentLocation = "contentLocation-value"
contentBytes = "contentBytes-value"
}
# A UPN can also be used as -UserId.
New-MgBetaUserMessageAttachment -UserId $userId -MessageId $messageId -BodyParameter $params
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
// Code snippets are only available for the latest version. Current version is 5.x
// Dependencies
using Microsoft.Graph.Beta.Models;
var requestBody = new Attachment
{
OdataType = "#Microsoft.OutlookServices.ItemAttachment",
Name = "name-value",
AdditionalData = new Dictionary<string, object>
{
{
"item" , new Message
{
OdataType = "microsoft.graph.message",
}
},
},
};
// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Me.Events["{event-id}"].Attachments.PostAsync(requestBody);
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
// THE CLI IS IN PREVIEW. NON-PRODUCTION USE ONLY
mgc-beta users events attachments create --user-id {user-id} --event-id {event-id} --body '{\
"@odata.type": "#Microsoft.OutlookServices.ItemAttachment",\
"name": "name-value",\
"item": {\
"@odata.type": "microsoft.graph.message"\
}\
}\
'
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
// Code snippets are only available for the latest version. Current version is 6.x
GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);
Attachment attachment = new Attachment();
attachment.setOdataType("#Microsoft.OutlookServices.ItemAttachment");
attachment.setName("name-value");
HashMap<String, Object> additionalData = new HashMap<String, Object>();
Message item = new Message();
item.setOdataType("microsoft.graph.message");
additionalData.put("item", item);
attachment.setAdditionalData(additionalData);
Attachment result = graphClient.me().events().byEventId("{event-id}").attachments().post(attachment);
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Models\Attachment;
use Microsoft\Graph\Generated\Models\Message;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new Attachment();
$requestBody->setOdataType('#Microsoft.OutlookServices.ItemAttachment');
$requestBody->setName('name-value');
$additionalData = [
'item' => [
'@odata.type' => 'microsoft.graph.message',
],
];
$requestBody->setAdditionalData($additionalData);
$result = $graphServiceClient->me()->events()->byEventId('event-id')->attachments()->post($requestBody)->wait();
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Import-Module Microsoft.Graph.Beta.Calendar
$params = @{
"@odata.type" = "#Microsoft.OutlookServices.ItemAttachment"
name = "name-value"
item = @{
"@odata.type" = "microsoft.graph.message"
}
}
# A UPN can also be used as -UserId.
New-MgBetaUserEventAttachment -UserId $userId -EventId $eventId -BodyParameter $params
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
from msgraph import GraphServiceClient
from msgraph.generated.models.attachment import Attachment
from msgraph.generated.models.message import Message
graph_client = GraphServiceClient(credentials, scopes)
request_body = Attachment(
odata_type = "#Microsoft.OutlookServices.ItemAttachment",
name = "name-value",
additional_data = {
"item" : {
"@odata_type" : "microsoft.graph.message",
},
}
)
result = await graph_client.me.events.by_event_id('event-id').attachments.post(request_body)
Important
Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.
Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: https://aka.ms/ContentUserFeedback.