Corporate Email Policy How Should I Leave Feedback To My Superiors When Leaving A Job?

How should I leave feedback to my superiors when leaving a job? - corporate email policy

I am a business student at a large company, I would say the name, but I think it would be against the policy. But anyway, tomorrow I'm going to go to college. How do I go for my comment above? Just send an e-mail? They were all great, but I do not know how I'm sucking sound.