Get attachments for a particular Email

Question

I am using Microsoft Graph API to get attachments of particular email.

https://graph.microsoft.com/v1.0/users/<user-id>/messages/<attachments>/attachments
Above API returns attachments from previous conversation thread as well.

Suppose a mail was started and it had bunch of replies with attachments and my latest email contains only one attachment and in entire email there are like 5 attachments with latest message-id if i try to fetch attachment instead of returning 1 attachment, it returns all attachment.

Is there any filter available just to get that particular attachment of the given mail.

i tried to get attachments of that particular sent mail but instead i am getting attachments of entire thread

Answer 1

Hi @Kasim Sharif ,

Thanks for reaching out.

I am unable to reproduce your issue from my test tenant. As per the details you are passing the incorrect Graph API endpoint. Can you please execute the MS Graph API: GET /users/{User-id}/messages/{message-id}/attachments. This graph call will return only the attachment details of that particular message in response based on message-id.

In my below example I have a mail conversation with multiple attachments of total 4, but when I query for latest message i got only 2 attachment details in response.

Hope this helps.

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Answer 2

Hi @Kasim Sharif

Welcome to the Q&A Forum!

First of all, I am not sure if it is your writing error, /users/{user-id}/messages/{attachments}/attachments is not a valid api endpoint, the correct endpoint should be: /users/{user-id}/messages/{message-id}/attachments.

However, even with the correct endpoint, you cannot list specific attachments under a specific message, which returns only one collection of attachment lists. If you want to get a specific attachment under a specific message, then it may take multiple calls, because the endpoint does not appear to be able to filter using the $filter parameter.

1. /users/<user-id>/messages/<message-id>/attachments
2. /users/<user-id>/messages/<message-id>/attachments/<attachment-id>

If you are interested in automation, then using the graph C# SDK is undoubtedly a good solution, you just need to traverse the attachment set and then make a simple judgment with a specific attachment name to get a specific attachment under a specific message:

using Azure.Identity; 
using Microsoft.Graph;
using Newtonsoft.Json;

try
{

var scopes = new[] { "https://graph.microsoft.com/.default" };

var tenantId = "{tenant id}";

// Values from app registration
var clientId = "{client id}";
var clientSecret = "{client secret}";

// using Azure.Identity;
var options = new TokenCredentialOptions
{
      AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
};

// https://learn.microsoft.com/dotnet/api/azure.identity.clientsecretcredential
var clientSecretCredential = new ClientSecretCredential(
      tenantId, clientId, clientSecret, options);

var graphClient = new GraphServiceClient(clientSecretCredential, scopes);

var attachments = await graphClient.Users["{user name}"].Messages["message id"].Attachments.Request().GetAsync();

      for (int i = 0; i < attachments.Count; i++) {

            var attachmentName = attachments[i].Name;

            if (attachmentName == "{attachment name}") {

                  Console.WriteLine("att:" + JsonConvert.SerializeObject(attachments[i]));  
            }          
      }
}
catch (Exception ex) { 

      Console.WriteLine(ex);
}

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