Productivity reports show what has been done by your CS in terms of productivity.
Activities are all the activities entered in the action box
Calls are the calls logged in Salesmachine under the tab "log activity" / Call criteria
Emails are emails logged in the log activity tab, under the email criteria. Emails sent via Gmail integration will not be reported in this tab.
Calls are the meetings logged in Salesmachine under the tab "log activity" / Call criteria
Todos are the manual todos entered in Salesmachine under the tab "create task". Automatic todos created via Automation will not be synched in the productivity tab