How to write a resignation letter that's effective immediately? This is to notify you that I would like to resign from my position as (your post) effective immediately from tomorrow.This letter informs your employee that you must depart right away without the standard two weeks' notice. Below you'll find tips for writing a standard resignation letter, as well as sample letters and emails you can use as you write your own. Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template. Use one of our resignation letter templates. In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience. Adhere to the outlined plan in the resignation letter. A polite, formal closing with "Sincerely" and your name and signature will be the final element of your tendering a resignation letter format. (For example, "I regret to inform you that I will be resigning from my position, effective immediately.