Microsoft Graph API with OAuth2

We provide two options for Graph API connections.

Delegated access (Setup instructions for Delegated Access)

• A user is signed in.

• The app reads, writes, or sends as that user.

• The app can only do what the user is allowed to do.

Application access (Setup instructions for Application Access)

• No user is signed in.

• The app reads, writes, or sends from a mailbox on its own.

• Requires admin consent because it can access mail without a user.