How to write a resignation letter that's effective immediately? Learn how to write a resignational letter if you're quitting for personal reasons.Simply enter your information below and the form will automatically be filled in. When complete, the form will be saved as a PDF to print and send. 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. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. Your resignation letter should be concise, respectful, and professional. I would like to inform you that I am resigning from my position as Product Marketing Analyst for Company B, effective March 31, 20XX.