The EmaiI Signature Web Portal - Help Center

IT Pro: Unattended deployment of Xink Add-in (Microsoft 365)

This article is intended for use by the Office 365 administrator, IT Administrator and System Administrator.

Follow these steps to mass deploy the Xink Outlook add-in to your employees.


  • The add-on only works with Microsoft 365.  It does not work with on-premise Exchange.
  • The user running the deployment script mentioned below must have impersonation rights or delegation permission on the mailboxes the add-in is deployed to. Please refer to this guide on how to grant application impersonation.
  • The deployment script must be run from an Exchange PowerShell.
  • The deployment script does not support 2FA on Microsoft 365.

Part 1 - Download files

Download the deployment sctipts for Xink Add-in from -> and extract the files. The downloaded zip file contains "XinkOutlookAddinManifest.xml" and two PowerShell script files.

Part 2 - Deployment of Xink Add-in

Login to Exchange admin center > Organization > add from file and upload "XinkOutlookAddinManifest.xml"

Edit Xink Addin and select Optional, enabled by default or Mandatory, always enabled and Save.


Part 3 - Deployment of Xink Domain Token

You need the Xink domain token for your company for the deployment.  Find your domain token like so.

Login to Xink portal and copy the Xink domain token here ->

Click the icon to the right

Locate two PowerShell scripts files from the zip-file you downloaded above.

1.) Start Windows PowerShell ISE as administrator.
2.) Now open or load the downloaded script "Load-Exchange-Session.ps1" and run it. You will be prompted for login to your Microsoft 365 account (with PIN if MFA enabled).

3.) Input code sent by Microsoft if prompted.

4.) It will run for a while to install the required module.

5.) Open or load "Set-DomainToken.ps1" and run it. It will ask for the Xink domain token that you copied above.
6.) It will again prompt for your Microsoft 365 admin credential and may prompt you to provide permission if this is your first time to execute.

7.) Once credentials are entered and permissions granted, it will then proceed to apply the DomainAuthToken to mailboxes. This may take a while depending on the number of mailboxes.

8.) Once it showed the message "Done!", then application of DomainAuthToken is complete.

Note: For Outlook on the web, you need to refresh the browser before any changes take effect.

Did you find it helpful? Yes No

Send feedback
Sorry we couldn't be helpful. Help us improve this article with your feedback.