Learn how to write a letter of resignation to quit your job on good terms. Here's what to include in a resignation letter, with examples and templates.Learn how to create a professional resignation acceptance letter with this downloadable template. You should write a short notice if you are leaving in two weeks or less. The first paragraph should state that you're leaving your job and mention the exact date when that will come into effect. I am writing to acknowledge receipt of your resignation letter dated September 12, 2051. Download a free immediate effect resignation letter template, easily customizable for your personal situation. Learn how to write a professional resignation acceptance letter with our helpful guide. It is with regret that I formally acknowledge receipt of your resignation notice on July 18th. Declaration of interest.