The Exclaimer Cloud Outlook Add-in feature enables you to select the most appropriate email signature whilst you compose your email in Outlook from the list of all your signature templates. The signature templates can be used for different messages; for example, to represent different marketing brands.
This page guides you through the process of how you can install the Exclaimer Cloud Outlook Add-in, for a single user or deploy it to your Microsoft 365 tenant.
Before you install the Exclaimer Cloud Outlook Add-in (Outlook), please ensure you have:
Windows
- Microsoft Outlook 2019 Click to Run (C2R) or above [version 2108 (build 14326.21096) or above]
- Microsoft Outlook Web Access
- Microsoft Windows 10 or above
(Please note Exclaimer Cloud Outlook Add-in is not supported on Microsoft Windows 8.1 or Microsoft Windows Server 2012 R2)
Mac
- Office for mac 16.64 (22081401)
Please click on the required options listed below to go through the detailed description:
- Click File from the ribbon bar.
- From the left-hand side, click Office Account, then click About Outlook:

The Microsoft Outlook version running is displayed on top:

Follow these steps to install the Exclaimer Cloud Outlook Add-in (Outlook) for your own account:
- Log in to the Outlook Desktop App.
- From the Home ribbon bar, click the Get Add-ins option.
The Add-Ins for Outlook window is displayed. - Select My add-ins, then from the Add a custom add-in drop-down list select Add from URL...
The Add private add-in from a URL window is displayed.
- In the space provided, enter the Add-in Manifest URL: https://outlookclient.exclaimer.net/ecosa/preview/manifest.preview.xml.
- Click OK to proceed.
A Warning message is displayed, click Install to proceed:
All signatures based on your Exclaimer Cloud subscription have been added to your Outlook desktop:
Follow these steps to install the Exclaimer Cloud Outlook Add-in (Outlook Web) for your own account:
- Log in to the Outlook Web App.
- Click New Message to compose a new email.
- Click the ellipsis (
) to access the menu.
- From the menu select Get add-ins:
The Add-Ins for Outlook window is displayed. - Select My add-ins, then from the Add a custom add-in drop-down list select Add from URL...
The Add private add-in from a URL window is displayed.
- In the space provided, enter Add-in Manifest URL: https://outlookclient.exclaimer.net/ecosa/preview/manifest.preview.xml.
- Click OK to proceed.
A Warning message is displayed, click Install to proceed:
All signatures based on your Exclaimer Cloud subscription have now been added to your Outlook Web:
You, as a member of the IT team, can easily deploy signatures to every employee (end-user) within your organization, irrespective of where the employees are based. The end-user doesn't have to be connected to the network and there is no need to deploy this using the Group Policy. As there is no separate application to manage, this results in less IT overhead.
Follow these steps to deploy the Exclaimer Outlook Add-in to your Microsoft 365 tenant:
Microsoft 365 Global Administrator credentials
- Log on to the Microsoft 365 Portal as a Global Administrator.
- Open the admin center.
- Under Settings, select Integrated apps.
- Click Add-ins:
- Click Deploy Add-in:
- Click Next:
- Click Upload custom apps:
- Select the option I have a URL for the manifest file.
- In the space provided, enter the Add-in Manifest URL: https://outlookclient.exclaimer.net/ecosa/preview/manifest.preview.xml.
CAUTION! When you enter the URL, do not delete 'https://'.
A Configure add-in window is displayed. - As required, choose which assigned users you want to have access to Exclaimer Cloud:
- Everyone: Select to assign everyone in your organization access to Exclaimer Cloud.
- Specific users/groups: Select to assign specific users or groups within your organization access to Exclaimer Cloud. Enter a specific user or group name; this is a predictive text field, so any matching users or groups will be displayed as you start to type.
- Just me: Select to assign only yourself, in your organization, access to Exclaimer Cloud. - Now, select how you wish to deploy the Outlook Add-in:
- Fixed (default): Select to automatically deploy the Outlook Add-in to the assigned users. Users cannot remove the Add-in from their ribbon.
- Available: Select to deploy and make it available to assigned users to install the Add-in themselves.
- Optional: Select to automatically deploy the Outlook Add-in to the assigned users. Users can remove the Add-in from their ribbon. - Click Next to continue.
The Deploy Exclaimer Cloud Signatures window is displayed.
WARNING! It can take approximately 12 hours to deploy the Exclaimer Cloud Outlook Add-in to all users within your organization.
The users will need to relaunch Microsoft Office for this effect to take place. - A confirmation message is displayed when the Outlook Add-in has been successfully deployed:
- Click Next to proceed.
Once the Exclaimer Cloud Outlook Add-in has been successfully deployed, users can start to execute client-side email signatures. Users can find the Exclaimer icon at the bottom toolbar or as an option within the ellipsis () in their Outlook Desktop App.
For more information, see How to use the Exclaimer Cloud Outlook Add-in.
