Starting at the top of the letter, I want you to include your contact details. Find out who should be the recipient(s).In this article, we explain how to construct a formal resignation letter as well as provide an example to help you write your own. This article teaches you how to write a resignation email with the help of resignation letter email examples and our resignation email template. Why should I write a resignation letter? Resignation letters are professional courtesies that extend your professionalism, even in the last. What to write in a resignation letter email. First, you want your tone to be professional, upfront, and straightforward.