In order to use the MailStore Outlook App for the new Outlook, you must download a manifest from the Admin Access. The manifest describes how your MailStore installation can be accessed from within Outlook.
This manifest can be uploaded to the app store of your Microsoft 365 tenant. This makes the MailStore Outlook App available in the Outlook app store and can either be centrally assigned to users by administrators via policy, or users can add the app from the app store to their Outlook installation.
Due to caching in the Microsoft 365 infrastructure changes made may not be visible immediately. This delay can happen in the Microsoft Teams Admin Center but also in new Outlook.
Requirements
- The new Outlook must be connected to a Microsoft 365 tenant.
- Administrative access to the Microsoft 365 tenant.
Downloading the Manifest
The manifest can be downloaded from the Admin Access in the section “Outlook App”.
Installation
- Log in to the Microsoft Teams Admin Center.
- Go to Teams Apps > Manage Apps.
- Click Actions > Upload new app.
- Click on Upload and select the previously downloaded manifest.
- After the successful upload, the app can be found by searching for “MailStore”.
- Select the app and click on Users and Groups.
- Publish the app.
- End users can now find the app in the app store within Outlook and add it to their Outlook.
- You can also assign the app to users via policy, to do this, click on Setup policies.
- Add a new policy or edit an existing policy.
- Configure the policy according to your needs.