Be direct and to the point and, in the first sentence, acknowledge the receipt of their letter of resignation and formally accept it. Learn how to write a short notice resignation letter with samples.Find a solution to the challenge of resigning on short notice. Resignation Acceptance Email templates: Discover how to write an effective resignation acceptance letter. I am writing to acknowledge receipt of your resignation letter dated September 12, 2051. Sample emails and letters to accept an employee's resignation, explain company resignation policies, and confirm the last day of work.