Learn how to write a professional resignation letter with our stepbystep guide including 15 resignation letter examples for various situations. I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters.We have curated 20 examples of resignation emails that help you look thoughtful, honest and professional. When leaving the university, you must submit a letter of resignation to your manager and HR providing your last day of work. When leaving the university, you must submit a letter of resignation to your manager and HR providing your last day of work. It helps you resign professionally, promote a smooth transition, and put your health first. Subject lines are crucial for email.