Add contact details, company name, and date. Learn how to write a professional resignation letter with our step-by-step guide and easy to use templates.Dear (Manager's Name), I'm writing to you today to submit my notice and resignation letter. Find a simple resignation letter format to help you smoothly and professionally resign from your job. Get top 8 resignation letter sample. Master the art of writing a resignation letter with our comprehensive guide, offering step-by-step instructions, tips, and templates. The signed 1945 resignation letter from Prime Minister Winston Churchill to King George, ending his ministry. Buy from the Raab Collection. Your resignation email's subject line should say your name and that you're resigning. In the opening paragraph, state your intention to resign and provide a clear date of departure.