Automated email notification for people in waitlist x days before the course start
Currently some courses have lots of people in the wait list. Some of these people are registered in the wait list months before the course starts. If there is an automated notification to remind them that they are still on the waitlist. And ask them to cancel from the waitlist if they already have some other plans. Hopefully we will end up only with those who are still interested in taking the course. So we can offer the course to those who are still interested and we don't waste time offering to those who are already have other plans.