A director resignation letter is a statement that declares your intent to leave your position as the director of a board, company or other organization. Sec. 201.001. RESIGNING OR DECLINING OFFICE.Send your letter certified mail or ask for an email receipt if you are sending your resignation electronically. In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. There is no official Board of Directors email, everyone just uses their own private email accounts. It is always best and professional to announce resignation in person. Real Estate Lawyer: LawEducator. This means that the resignation must be (1) in writing and (2) delivered to the corporation. Your resignation letter should be a mere formality, not a way to break the news. Simple Resignation Letter Examples.