follow up template worflow reply

Hi, I cant seem to send follow up emails from the assigned user using a workflow. It always uses the system e-mail. Is there a way you can send follow up templates from the assigned users e-mail to the record e-mail using a worklow based on time?

No, the email is a system event.

Thanks! So the best way to do that would be to setup specific campaigns with a workflow that would feed my target list for example?