How to write a resignation letter that's effective immediately? It's time to quit the job, and you're not giving two weeks' notice.Here's how to politely write a resignation letter, effective immediately. Here is our sample email to resign with immediate effect. Dear (Name), I am resigning from my role as (job) with immediate effect. In the first sentence, clearly state your intention to resign and that your resignation is effective immediately. Looking to resign with a 24 Hours Notice Resignation Letter? Use our resignation letter template for notice-period roles. Create your immediate resignation letter online in minutes. Customize, download, and resign professionally with ease.