Taylor discusses 6 key aspects of writing a resignation letter, including when to give notice, what to say, how to format it, and how to deliver it. In the opening paragraph, clearly state that you are resigning from your position.Resignation Letter is always written to HR(be it a person or mail group). You can keep your reporting manager in cc. Make sure to follow proper business letter format in your letter. Then, state your intent to resign and exact date of departure. In this article, we explain how to construct a formal resignation letter as well as provide an example to help you write your own. Lastly, use a formal signoff. It is good practice for managers to acknowledge the resignation in writing. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position.