How to write a resignation letter that's effective immediately? Learn how to craft a professional resignation letter without notice with our guide.I want to thank you for providing me with this opportunity three years ago. Create an Immediate Resignation Letter without a notice period using our free printable templates. Resign with a professionally designed document. Resignation Letter No Notice. Customize any of these resignation letters in minutes using our free AI-powered resignation letter builder.. This letter informs your employee that you must depart right away without the standard two weeks' notice. Use this resignation letter example to inform your employer that you need to resign immediately and will not be able to give two weeks' notice. AI technology has made it easier than ever for students to plagiarize homework and as a result, some fear, to sabotage their own learning.