Message Defence: How To Install The Microsoft Outlook Add-In

March 01, 2022 | 2 min read | Message Defence

In this video, Anthony from The HBP Group explains how to install the Microsoft Outlook add-in for Message Defence. If you prefer to find out how install the Message Defence add-in with written instructions, we have included these further down the page.

Step-by-Step Guide

Stage 1: Installing the add-in

You can access the web version of Message Defence using your favourite web browser, such as Edge, Chrome or Firefox.

1) Go to and click on the “Download Outlook Add-On Installer” below the sign in boxes.

how to install outlook message defence add-in

2) If you see a message in the top right of your browser that says that the file cannot be downloaded securely, click on the three dots in the top right of the message and click on “Keep” and then “Keep Anyway”.

3) Once the file has been downloaded click on “Open File” and follow the instructions in the installation wizard. Once the installation is complete, Microsoft Outlook will open automatically.


Stage 2: Using the Add-In

1) Once Microsoft Outlook is open you will see two new buttons in the top right of Message Defence which allow you to “Mark as Spam” or “Mark as Not Spam”.

2) To notify Message Defence about an email which is either Spam or Not Spam, simply select the email and click the relevant button.

how to install outlook message defence add-in


Stage 3: Configure Settings

1) To configure the settings of the Message Defence Outlook Add-In, go to File in the top left hand corner and go to “Barracuda Networks” and click “Configure”. This will bring up a small control panel to allow you to manage some of the preferences for the Add-In.

how to install outlook message defence add-in

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