A going away letter is a formal letter written to announce your departure from a company, organization, or group. It is typically sent to your colleagues, clients, and other relevant parties. The purpose of a going away letter is to express your gratitude for the opportunity to work with them, inform them of your departure date, and provide any necessary contact information for the future.
Going away letters are important because they allow you to leave a positive and lasting impression on your colleagues and clients. They also provide an opportunity to thank your colleagues for their support and guidance, and to wish them well in the future.