How to count unread messages in Microsoft Graph - microsoft-graph-api

Question

I'm trying to get a simple count of unread messages in a folder, but I'd like to just get a count without having to retrieve any of the message detail.
The closest I've got is something like this:
https://graph.microsoft.com/v1.0/users/{user}/mailFolders/Inbox/messages?$filter=isRead ne true&$count=true&$select=id&top=1
Notice that I'm including $select=id here, but I don't really want that - I'm just looking for a simple count.

Answer 1

Something like this is closer to what I need:
https://graph.microsoft.com/v1.0/users/{user}/mailFolders/Inbox
This gives some basic folder information for that folder, including the unreadItemCount.
{
"#odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('{user}')/mailFolders/$entity",
"id": "AAMkADQwNDkzY2MwLWRkODMtNDdkYS05MjNmLWI0YTA4OTNlN2U1ZgAuAAAAAABpELO9F64CS6YLKzHVeiwoAQDXOQANV1mvRZBdzyuZRD-5AAAAAAEMAAA=",
"displayName": "Inbox",
"parentFolderId": "AAMkADQwNDkzY2MwLWRkODMtNDdkYS05MjNmLWI0YTA4OTNlN2U1ZgAuAAAAAABpELO9F64CS6YLKzHVeiwoAQDXOQANV1mvRZBdzyuZRG-5AAAAAAEIAAA=",
"childFolderCount": 0,
"unreadItemCount": 1,
"totalItemCount": 2
}

Answer 2

To get only the unread item count of your Inbox (or any other folder, for that matter), you can use this:
https://graph.microsoft.com/v1.0/me/mailFolders/Inbox?$select=unreadItemCount
This will return:
{
"#odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('{user}')/mailFolders/$entity",
"id": "AAMkADQwNDkzY2MwLWRkODMtNDdkYS05MjNmLWI0YTA4OTNlN2U1ZgAuAAAAAABpELO9F64CS6YLKzHVeiwoAQDXOQANV1mvRZBdzyuZRD-5AAAAAAEMAAA=",
"unreadItemCount": 19
}