Why Can't I see 'All Emails' from all users at the contact level?

Why Can't I see 'All Emails' from all users at the contact level?

I am unable to see all the email history at the contact level within ZoHo CRM.  This function wants me to select a specific user within my company to see his/hers email only.  This does not help with quickly seeing a 'Snapshot' of all the email history related to this customer.  However, in the drop down there is an option called 'Sent Emails from CRM' but when i choose this nothing appears.

Am I missing something?  Is there a way to show all the users emails at one time for every contact?