In the US I would say it's not safe, at least not entirely. That's communication with your prior employer usually from the email address they provided.This letter accepts an employee's resignation, noting their last day will be after serving out their required notice period according to their contract. Kindly assist in training your replacement to ensure a smooth transition. Template for an employer to acknowledge an employee's resignation. A two (2) weeks notice resignation letter is the most common letter used when notifying an employer of an official resignation. It provides details about the employee's notice period, return of company property, and full and final settlement. Learn how to write a professional resignation acceptance letter with our helpful guide. Browse a sample resignation acceptance letter to effectively acknowledge and accept employee resignations. Discover a concise and professional template.