In the "Control Email Settings" page, some items are related to scheduling email jobs within the evalsys tool, and others are related to scheduling email jobs through the Job Scheduler tool. They should be separated into two distinct lists in the page. Then users could select a work-flow and be shown only the options related to that work-flow.
Among the issues that may need to be dealt with in one workflow or the other are:
1) a simple admin page for controlling email notifications.
2) decisions about timing of announcements, reminders, etc (frequency, time of day, etc).
3) whether to send one email per student per evaluation or a single email per student listing all notifications for the day
4) control of batch jobs to avoid overloading the server(s) processing the emails
There are others, but that gives an idea.