In this article, we explore what a resignation letter for a better opportunity is, how to write one and provide a template and example. Start with a formal greeting: Address your letter to your immediate supervisor or manager.Here's how to write a resignation letter when you're quitting for a job with a better compensation package, and you want to provide your employer with a reason. Dear Ms. Emily Clarke,. A resignation letter is a way to formally end your employment and provide details such as an end date and contact information. One way to leave on good terms is to write a polite, professional resignation letter in which you thank your employer for your time at the company. A resignation letter that takes a bit more time to outline your growth as a result of your employment. A simple resignation letter format includes a resignation statement, an appropriate notice period, and an expression of gratitude.