I have created a custom object "Assigned tasks" that works like tasks such that it has due date, status, subject, priority e.t.c. This custom object "Assigned tasks" is a child object to case object. Case object has a date/time field called "Event start date".
I want to send daily email alerts/reminders for the pending tasks(status=pending) starting from 20 days left to event execution until the event day. So in total 20 reminders, each on one day. I know there is an option to schedule email alert through time-based workflows, but I don't seem to find any option that says daily, it either says 'num of days' 'before' or 'after' a particular date. Any idea how can I achieve this?