How to register an OAuth app for Microsoft Outlook
Register your app with Microsoft Entra admin center
1. Create a new app
Go to the Microsoft Entra App registration page and click the New registration button
2. Enter app details
On the next page, enter your application's registration information:
- Name - Enter a meaningful application name that will be displayed to your users. Most of the time, this should be your company's name.
- Supported account types - Select Accounts in any organizational directory and personal Microsoft accounts
- You can select other options if they are more relevant for you. This option supports the broadest user base.
- Redirect URI - Set the platform to
Web
and usehttps://unify.apideck.com/vault/callback
as the redirect URI. This is the default redirect URI for Apideck.
3. Add permissions
After your app is created, select API permissions in the sidebar.
Select Add a permission > Microsoft Graph > Delegated Permissions
You can use the search option to find the following permissions:
offline_access
User.Read.All
Contacts.Read.Shared
If your app only needs read access to users, you can select
User.Read.All. In case you want to create or modify users, you can change the permissions to
User.ReadWrite.All. Similarly, if your app only needs read access to contacts, you can select
Contacts.Read.Shared. In case you want to create or modify contacts, you can change the permissions to
Contacts.ReadWrite.Shared.
Note: Some permissions will require admin consent.
This results in a list of permissions with an approved status:
4. Generate credentials
Go to Certificates & secrets > Client secrets and select New client secret.
Enter a description and select an expiry time.
After the secret is generated, make note of the Value and Secret ID for later use. You will not be able to retrieve the value after leaving this page.
5. Configure in Apideck
Head over to the Apideck dashboard for Microsoft Outlook
Enter the following credentials to setup the connection:
- Client ID: Application ID or the Secret ID of the client secret in Microsoft Entra
- Client Secret: Value of the client secret in Entra (Note: Don't use the
Secret ID
here)
Important: Double-check that you copied the correct values from Step 4, as Outlook calls the Client ID the Secret ID, which can be confusing.
Review the scopes to match them with the permissions that are granted with the Microsoft Entra Application.
Once you've entered the credentials, click Save settings. You can now use the connection to retrieve data from Microsoft Outlook.