Enrollment notifications for incomplete courses

Summary

Which notifications for incomplete enrollments, before the end date?

Content

 

Dear All,

I cannot find a way to fulfill these requirements from my users, any pointer is welcomed:

A mandatory online course (compliance) must be pushed to thousands of employees.
This course has to be available for a certain period only.
The admins want to be able to follow the completion of that course (in percent), to report to management regularly.
When starting the course, a notification must go to all the employees concerned, with a direct link to the course.
A certain time before the end of the course, a reminder must be sent (automatically or in a few clicks) to all the people whose course is not complete (not started, failed, etc.).