Microsoft Graph 如何为不同的用户请求电子邮件？

Question

I understand how this call works (to get my own emails):

graphClient.Me.MailFolders.Inbox.Messages.Request().GetAsync();  

How would I use a similar call do get another user's emails? Would it be something like this?:

graphClient.Users["userid"].MailFolders.Inbox.Messages.Request().Top(25).GetAsync();

When I execute this, I get this error: "Error in /Home/GetEmails: Caller needs to authenticate."

Answer 1

You can only do this if you request for an App Only Token using App Only permissions for access to the Microsoft Graph.

Read here to learn about the different Graph Permissions for the Mail Endpoint .

I think this only works for AAD accounts, and you must be a Tenant Administrator to consent to these kinds of permissions.