1. Log on to the Cloud App Security web console.
2. Go to Administration > Add-in for Outlook.
3. Specify the quarantine permission settings.
   1. Under Quarantine Management Permissions, turn on the Status toggle to allow your users to manage quarantined emails.
   2. Specify the permissions that your users can have on emails quarantined for different reasons.
       

      For emails quarantined for containing ransomware, malicious files, or malicious URLs, Trend Micros recommends that you exert caution when granting permissions to your users.

       
   3. Enable Trust Sender if you want your users to add senders to bypass Advanced Spam Protection.

      The senders trusted by your users do not bypass other enabled scan filters, such as Malware Scanning, File Blocking, Web Reputation, and Virtual Analyzer.

       

      Senders trusted by your users can not be blocked by the blocked sender list for Advanced Spam Protection in policy settings. However, such users can be blocked by the Blocked Lists for Exchange Online in global settings.

       
4. Turn on the Status toggle under Email Reporting to allow your users to report emails as spam, phishing, or not a risk to Trend Micro.
    

   Reporting an email also sends a copy of the email to Trend Micro. However, this action does not move or delete the email.

    
5. Click Save.
6. Copy the Link to manifest file.
7. Log on to the Microsoft 365 admin center with your Global Administrator account.
8. Go to Settings > Integrated apps and click Upload custom apps.
9. On the Upload Apps to deploy screen, click Provide link to manifest file, paste the link you copied in step 6, and click Validate.
10. Wait until the validation is completed, click Next.
11. On the Add users screen, select an option under Assign users, and click Next.
     

    This add-in works only for Exchange Online users protected by CAS.

     
12. On the Accept permissions requests screen, review the app permissions and capabilities, and click Next.
13. On the Review and finish deployment screen, review the information and click Finish deployment.

    Wait a few minutes for the deployment to complete.

14. Click Done.
     

    According to Microsoft, it can take up to 24 hours for a newly deployed add-in to appear on the app ribbon in your users' Outlook mailboxes. Your users may need to relaunch Office to view the add-in icon on the app ribbon.

     

Once the Add-in for Outlook is deployed, you will see the following add-in icon and option.

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