You want to give at least a two weeks' notice. In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started.It's generally best to write in a block format, without indenting. You must give appropriate notice (in most places it is 2 weeks, but in some companies it may be a month), and then you're done. Learn how to write a professional resignation acceptance letter with our helpful guide. This article teaches you how to write a resignation email with the help of resignation letter email examples and our resignation email template.