Send Outlook Mail Message - Error: Account not found

Hi,
I am very new to UIpath. I have UI path community edition installed in my pc. I have outlook installed as well. However, I am not able to see outlook or email integration in my UI path. When I tried to open a sample project for outlook integration I got the following error
“Could not find type ‘GetOutlookMailMessages’ in namespace ‘http://schemas.uipath.com/workflow/activities’. Row: 63, Column: 6” Can you please help me troubleshoot this?

Thanks,
Surjith