Use one of our resignation letter templates. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation.The complete guide to writing your resignation letter including expert tips, free copyable samples, and templates. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. Need to write two weeks notice? Due to unforeseen circumstances, I must resign. I'm writing to inform you that I'm resigning from my position as a client manager for Yays Marketing.