I am building a daemon application running on a server that uses the Microsoft graph API to access a user's mailbox.
The app authenticates without a user using a client secret and token.
https://docs.microsoft.com/en-us/graph/auth-v2-service
When granting my application permission to access mailboxes, I had to grant read/write access to every user in the active directory, when I really only need a single user.
Is there a way to restrict the application permissions to a single user without having a user sign in?