You want to give at least a two weeks' notice. Be direct and to the point and, in the first sentence, acknowledge the receipt of their letter of resignation and formally accept it.Thank you for accepting my resignation within short notice. I have learnt a lot from you. Resignation Acceptance Email templates: Discover how to write an effective resignation acceptance letter. Please accept this letter as a notice of my resignation. Explore why a good resignation letter is important and how to write it, and check out our free resignation letter examples.