How to get extended property PidTagSentMailEntryId in Message via Microsoft Graph API?

Question

0

I'm using Microsoft Graph API to get my Office365 emails via /me/messages. I try to fetch the attribute for if it is sent or received.

Some other members noticed me about this extended property: https://learn.microsoft.com/en-us/office/client-developer/outlook/mapi/pidtagsentmailentryid-canonical-property

So I tried to GET it via: https://graph.microsoft.com/v1.0/me/messages?$select=ReceivedDateTime,Sender,Subject,IsRead,parentFolderId,&$expand=SingleValueExtendedProperties($filter=(Id eq 'Binary 0x0E0A'))

But unfortunately, I don't know how to access the extended property now. It is not visible within the Message object itself. If I dump a sent mail, the object looks like all other message objects and I can't find any more informations as without the $expand parameter.

What I'm doing wrong here? How can I access the PidTagSentMailEntryId property?

Answer 1

When you run the query, the value will be expanded in the property singleValueExtendedProperties as below.

If you are using the SDK assuming you are using .Net SDK for example, you can do

 var messages = await graphServiceClient  
            .Users["user-id"]  
            .Messages  
            .Request()  
            .Select("id,subject")  
            .Expand("SingleValueExtendedProperties($filter=(Id eq 'Binary 0x0E0A'))")  
            .GetAsync();  

This will return data that looks like:

[  
    {  
        "subject": "Subject goes here.",  
        "singleValueExtendedProperties": [  
            {  
                "value": "AAAAAMEqF24GH9hBjk0AEaj0EDABABWeiu9p+xxMo+DU7D1wckAAAAAAAQkAAA==",  
                "id": "Binary 0xe0a",  
                "@odata.type": null  
            }  
        ],  
        "id": "AAMkAG...Vr9AAA=",  
        "@odata.type": "microsoft.graph.message",  
        "@odata.etag": "W/\"CQAAABYAAAAVnorvafscTKPg1Ow9cHJAAACpk/SK\""  
    },  
    {  
        "subject": "Major update from Message center",  
        "id": "AAMkAG...vAAA=",  
        "@odata.type": "microsoft.graph.message",  
        "@odata.etag": "W/\"CQAAABYAAAAVnorvafscTKPg1Ow9cHJAAACpk96l\""  
    }  
]