How to Write an Immediate Letter of Resignation? Today I put in my two weeks notice at a small company whom I've appreciated being with.Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. Simple resignation letter and email message samples to use to quit a job, as well as tips for what to write and how to resign. Simple resignation letter and email message samples to use to quit a job, as well as tips for what to write and how to resign. How to Use Two Weeks Notice Letter? Keep it short and to the point. There's no reason to draw this letter out beyond a single page. Simply write that you're leaving for "personal reasons" after stating your intent to resign and your last day of employment with the company.