How to write a resignation letter that's effective immediately? Pick the perfect wording and convey the message best suited for your situation.Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. Be prepared for an emotional or difficult conversation. Clearly and calmly explain your reason for leaving, and present your resignation letter. I am writing to notify you that I am resigning from the role of Sales Engineer with XYZ Corporation. It is with regret that I must inform you of my resignation. In the body of the letter, state your intended retirement date (your last day) and your thoughts on a transition plan. The management has put their faith in me, and I got muchrequired exposure.