I have a custom object called employees. It stores employee details including their email ids. I have a process builder set up which sends email alert to this email ids when ever a record is created or edited. I would like to have a record what email is sent out an when in Activity history of the custom object Employee.
I explored a link - https://medium.com/@brilligence/salesforce-recording-activity-history-on-workflow-email-alerts-8ae227fa8cee#.wqr7rgth5 which talks about a solution, but seems like it is possible with Leads or contacts only and not with custom objects. Is that true? If so , is there any other way to store the activity of email alert in history?