There are
two ways to install SendGuard, through the Microsoft Admin Center or directly
on the computer.
SendGuard
for Microsoft 365 can be installed or deployed centrally via the Microsoft 365
Admin Center. However, that it may take several hours for the add-in to appear
for all users—this delay is
controlled by Microsoft.
For a
faster setup, especially for testing or limited deployments, you may want to
install SendGuard individually by following the steps below.
Individual
Installation:
In your preferred browser, go to https://aka.ms/olksideload.
On the Add-Ins
for Outlook page, search for "SendGuard365 for Outlook" and Click
Add

(Note: The Add-in
may take a few minutes to appear in Outlook this is controlled by Microsoft.)
Admin installation (Microsoft Admin Center):
Click here to Launch the add-in deployment
wizard. Directly in your Microsoft 365 admin center (Integrated apps).If
necessary, sign in to
Microsoft with your organization's Microsoft 365 global admin account.
In the wizard, two apps will be listed and automatically selected. Click Next.
On the next page of the wizard, you'll see the Assign Users options:
- Entire organization
- Specific users/groups
- Just me
Select the appropriate option. If you're using Specific
users/groups, you can search for users in the text field.
Note: For testing purposes, do not select "Entire organization". We recommend deploying the add-in to a few users using the Specific users/groups option.Click Next. The App
permissions and capabilities page will appear. Make sure to accept the permissions for both apps.
After accepting permissions, click Next to proceed to the Review and Finish Deployment page.
Click Finish deployment.
Note: It may take up to 6 hours for the add-in to appear and function correctly in Outlook. In some cases, deployment may take up to 72 hours, depending on the size of your
organization.