How to write a resignation letter that's effective immediately? Learn how to write an immediate resignation letter with our comprehensive guide, including tips, examples, and a customizable template.In the first sentence, clearly state your intention to resign and that your resignation is effective immediately. Here is a compilation of formal resignation letter templates to ease the pressure off you when writing your professional resignation letter. Download a free immediate effect resignation letter template, easily customizable for your personal situation. Create an Immediate Resignation Letter without a notice period using our free printable templates. Resign with a professionally designed document. Be professional and do not let your emotions write the letter. WNCXFM: On-Demand Podcast. Live news, investigations, politics, sports and the heartbeat of Toronto, Canada's largest city.