message : replyAll

POST https://graph.microsoft.com/beta/me/messages/AAMkADA1MTAAAH5JaKAAA=/replyAll
Content-Type: application/json

{
    "message":{
      "attachments": [
        {
          "@odata.type": "#microsoft.graph.fileAttachment",
          "name": "guidelines.txt",
          "contentBytes": "bWFjIGFuZCBjaGVlc2UgdG9kYXk="
        }
      ]
    },
    "comment": "Please take a look at the attached guidelines before you decide on the name."
}

// Code snippets are only available for the latest version. Current version is 5.x

// Dependencies
using Microsoft.Graph.Beta.Me.Messages.Item.ReplyAll;
using Microsoft.Graph.Beta.Models;

var requestBody = new ReplyAllPostRequestBody
{
	Message = new Message
	{
		Attachments = new List<Attachment>
		{
			new FileAttachment
			{
				OdataType = "#microsoft.graph.fileAttachment",
				Name = "guidelines.txt",
				ContentBytes = Convert.FromBase64String("bWFjIGFuZCBjaGVlc2UgdG9kYXk="),
			},
		},
	},
	Comment = "Please take a look at the attached guidelines before you decide on the name.",
};

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
await graphClient.Me.Messages["{message-id}"].ReplyAll.PostAsync(requestBody);

mgc-beta users messages reply-all post --user-id {user-id} --message-id {message-id} --body '{\
    "message":{\
      "attachments": [\
        {\
          "@odata.type": "#microsoft.graph.fileAttachment",\
          "name": "guidelines.txt",\
          "contentBytes": "bWFjIGFuZCBjaGVlc2UgdG9kYXk="\
        }\
      ]\
    },\
    "comment": "Please take a look at the attached guidelines before you decide on the name."\
}\
'

// Code snippets are only available for the latest major version. Current major version is $v0.*

// Dependencies
import (
	  "context"
	  msgraphsdk "github.com/microsoftgraph/msgraph-beta-sdk-go"
	  graphusers "github.com/microsoftgraph/msgraph-beta-sdk-go/users"
	  graphmodels "github.com/microsoftgraph/msgraph-beta-sdk-go/models"
	  //other-imports
)

requestBody := graphusers.NewItemReplyAllPostRequestBody()
message := graphmodels.NewMessage()


attachment := graphmodels.NewFileAttachment()
name := "guidelines.txt"
attachment.SetName(&name) 
contentBytes := []byte("bWFjIGFuZCBjaGVlc2UgdG9kYXk=")
attachment.SetContentBytes(&contentBytes) 

attachments := []graphmodels.Attachmentable {
	attachment,
}
message.SetAttachments(attachments)
requestBody.SetMessage(message)
comment := "Please take a look at the attached guidelines before you decide on the name."
requestBody.SetComment(&comment) 

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
graphClient.Me().Messages().ByMessageId("message-id").ReplyAll().Post(context.Background(), requestBody, nil)

// Code snippets are only available for the latest version. Current version is 6.x

GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);

com.microsoft.graph.beta.users.item.messages.item.replyall.ReplyAllPostRequestBody replyAllPostRequestBody = new com.microsoft.graph.beta.users.item.messages.item.replyall.ReplyAllPostRequestBody();
Message message = new Message();
LinkedList<Attachment> attachments = new LinkedList<Attachment>();
FileAttachment attachment = new FileAttachment();
attachment.setOdataType("#microsoft.graph.fileAttachment");
attachment.setName("guidelines.txt");
byte[] contentBytes = Base64.getDecoder().decode("bWFjIGFuZCBjaGVlc2UgdG9kYXk=");
attachment.setContentBytes(contentBytes);
attachments.add(attachment);
message.setAttachments(attachments);
replyAllPostRequestBody.setMessage(message);
replyAllPostRequestBody.setComment("Please take a look at the attached guidelines before you decide on the name.");
graphClient.me().messages().byMessageId("{message-id}").replyAll().post(replyAllPostRequestBody);

const options = {
	authProvider,
};

const client = Client.init(options);

const replyAll = {
    message: {
      attachments: [
        {
          '@odata.type': '#microsoft.graph.fileAttachment',
          name: 'guidelines.txt',
          contentBytes: 'bWFjIGFuZCBjaGVlc2UgdG9kYXk='
        }
      ]
    },
    comment: 'Please take a look at the attached guidelines before you decide on the name.'
};

await client.api('/me/messages/AAMkADA1MTAAAH5JaKAAA=/replyAll')
	.version('beta')
	.post(replyAll);

<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Users\Item\Messages\Item\ReplyAll\ReplyAllPostRequestBody;
use Microsoft\Graph\Beta\Generated\Models\Message;
use Microsoft\Graph\Beta\Generated\Models\Attachment;
use Microsoft\Graph\Beta\Generated\Models\FileAttachment;


$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$requestBody = new ReplyAllPostRequestBody();
$message = new Message();
$attachmentsAttachment1 = new FileAttachment();
$attachmentsAttachment1->setOdataType('#microsoft.graph.fileAttachment');
$attachmentsAttachment1->setName('guidelines.txt');
$attachmentsAttachment1->setContentBytes(\GuzzleHttp\Psr7\Utils::streamFor(base64_decode('bWFjIGFuZCBjaGVlc2UgdG9kYXk=')));
$attachmentsArray []= $attachmentsAttachment1;
$message->setAttachments($attachmentsArray);

$requestBody->setMessage($message);
$requestBody->setComment('Please take a look at the attached guidelines before you decide on the name.');

$graphServiceClient->me()->messages()->byMessageId('message-id')->replyAll()->post($requestBody)->wait();

Import-Module Microsoft.Graph.Beta.Users.Actions

$params = @{
	message = @{
		attachments = @(
			@{
				"@odata.type" = "#microsoft.graph.fileAttachment"
				name = "guidelines.txt"
				contentBytes = "bWFjIGFuZCBjaGVlc2UgdG9kYXk="
			}
		)
	}
	comment = "Please take a look at the attached guidelines before you decide on the name."
}

# A UPN can also be used as -UserId.
Invoke-MgBetaReplyAllUserMessage -UserId $userId -MessageId $messageId -BodyParameter $params

# Code snippets are only available for the latest version. Current version is 1.x
from msgraph_beta import GraphServiceClient
from msgraph_beta.generated.users.item.messages.item.reply_all.reply_all_post_request_body import ReplyAllPostRequestBody
from msgraph_beta.generated.models.message import Message
from msgraph_beta.generated.models.attachment import Attachment
from msgraph_beta.generated.models.file_attachment import FileAttachment
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = ReplyAllPostRequestBody(
	message = Message(
		attachments = [
			FileAttachment(
				odata_type = "#microsoft.graph.fileAttachment",
				name = "guidelines.txt",
				content_bytes = base64.urlsafe_b64decode("bWFjIGFuZCBjaGVlc2UgdG9kYXk="),
			),
		],
	),
	comment = "Please take a look at the attached guidelines before you decide on the name.",
)

await graph_client.me.messages.by_message_id('message-id').reply_all.post(request_body)