To uninstall the RMail App for Outlook Desktop, please follow the steps below:

1. Click the “start” button on the windows toolbar.     
    
   
   
2. Click the “settings” button. 
    
   
   
3. Click the “system” option.
    
   
   
4. Click the “apps & features” option.
   
   
   
5. Scroll down and click the “RMail” app.
   
   
   
6. Click “uninstall” on the RMail app.