Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company.Thank you for the opportunity to be employed here (this is optional though). The letter includes a notice of resignation at least two weeks in advance. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. "Resignation - (Your Name)" or "Departure - (Your Name)" will suffice, and is a better subject line than "I Quit". Proofread and Format. Your resignation email's subject line should say your name and that you're resigning. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position. Be direct and to the point.