Two nearly identical automations check tasks for four reminder points — right at the due time, 30 minutes before, 1 hour before, and 1 day before — and send a plain reminder email to the assigned employee(s) or customer(s) when a task's due date matches one of those windows and its reminder setting calls for it. These are simple, plain-text reminder emails, not the templated automated-email system used elsewhere in Sprwt, so they can't be customized through the email template editor.