To deploy the Boost My Mail Outlook Add-in for all users. 

You must be an M365 global administrator.

The Add-in is deployed to Outlook for Windows, Outlook for Mac, Outlook Web App (OWA) and Outlook on mobile at the same time and without any action required from the user.

As a reminder, here are the prerequisites for using our Add-in. Once you have confirmed that you can deploy the Add-in, the steps for deploying the Boost My Mail Add-in are as follows:

1. Sign in to your Microsoft 365 admin centre 
2. Under Settings, select Integrated apps
3. Click Get Apps 
4. In the search bar, enter Boost My Mail   
5. Click Add
6. Make sure that the deployment test is not enabled.
   
    

7. Assign your users by selecting Entire Organization" (or "Entire Organization").
   ⚠️ All users must be selected. If you forget a user, the Add-in will not be deployed on their device.

8. Click "Next" to finalise the deployment.

⚠️ Important: deployment of the Add-in relies on M365 mechanisms, which may take up to 72 hours to be applied across your entire organisation. You must therefore take into account that not all users will be able to use the Add-in until this 72-hour period has elapsed. 

If you only want to deploy the Add-in to certain users or groups

In this case, you can select the "Specific users/groups" or "Specific users/groupes" option.

Where can users find the Boost My Mail Add-in once it has been deployed?

Once the Boost My Mail Outlook add-in has been successfully deployed, users can start running client-side email signatures.  Users can find the Boost My Mail add-in in the toolbar:

• In the classic version of Outlook, the Boost My Mail add-in is displayed in the ribbon, or you can find it via the Applications add-in.

• In the new version of Outlook, you can find it in the ribbon when composing a new email, by going to the Applications add-in. 

• In the Outlook Web App (OWA) version, you can also find it in the Applications add-in.

You can then modify access to the properties for your colleagues in the Boost My Mail solution

I can't modify user properties from the interface? – Helpdesk - FR 

⚠️ Important: the Add-in must not be installed locally, workstation by workstation.

Manual deployment on each user workstation may cause malfunctions and prevent certain features from working correctly, particularly the automatic insertion of signatures.

To ensure that the Add-in works correctly for all users, it is essential to deploy it centrally via the Microsoft 365 (M365) administration console.