# Microsoft Graph API with OAuth2

We provide two options for Graph API connections.

**Delegated access (**[**Setup instructions for Delegated Access**](https://docs.meta-inf.hu/email-this-issue/~/revisions/mYKQuRriMlSJeyH2TzSD/administration/mail-server-connections/microsoft-with-oauth2/microsoft-graph-api-with-oauth2/graph-api-with-auth-code-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**](https://docs.meta-inf.hu/email-this-issue/email-this-issue-for-jira-server-data-center/documentation/administration/mail-server-connections/microsoft-with-oauth2/broken-reference)**)**

* 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.