Navigate to the App registrations after logging into the Azure portal. Select App registrations > New registration.
On the Register an application page, register an app with the following:
| Field | Value |
|----------------------|---------------------------------|
| Name | Glean for Outlook Domain-Delegated |
| Supported account types | Accounts in this organizational directory only (Single tenant) |
| Redirect URI | (Leave this field blank) |
Navigate back to Azure Active Directory > Manage > App registrations and click on the app you created earlier. Then click on Manage > Certificates & secrets in the left sidebar.
Click on New client secret. Enter a description and select 24 months for expiry time, then click Add.
Under Client secrets, copy the Value (not the Secret ID) you generated and enter it in Glean as the Client secret. The Value will only be shown once.
Fill out the email used for setting up the application, which will only be used to validate the setup. The email must have exchange enabled and mailbox accessible by the application. Any user email with Outlook enabled will work to validate the configuration.