How do I write a resigning letter? Resignation letters should use the formal greeting: "Dear".The first sentence in the letter should state that you are resigning and when. This article will cover some pointers for writing a flawless resignation letter for graduate studies. Due to my personal aspirations of higher studies it would not be feasible for me to stay in the company anymore. I hope this letter finds you well. I am writing to notify you of my resignation from POSITION at SCHOOL, effective DATE. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude. Hi (Manager), I would like to inform you of my intention to resign from the post of XYZ at ABC Organization. Use business letter format.