Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last.Use one of our resignation letter templates. A good resignation letter is brief, succinct, and expresses gratitude to your employer. Use this sample to part ways amicably. The complete guide to writing your resignation letter including expert tips, free copyable samples, and templates. This article teaches you how to write a resignation email with the help of resignation letter email examples and our resignation email template.