Learn how to write a resignation letter with a notice period. You want to give at least a two weeks' notice.I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation. The only required elements are 'I resign' and an effective date (such as two weeks notice). This article teaches you how to write a resignation email with the help of resignation letter email examples and our resignation email template. Dear Dr. NAME: This letter is my official notification to you of my decision to resign from Wayne State University. I regret to inform you that, after much thought, I have decided to resign. Please accept this letter as a formal notice of my resignation. You need to send a formal mail and request the company to waive off the notice period. 3rd July 2013 From India, Delhi.