How to write a resignation letter that's effective immediately? Complete the entire form and enter all requested information in the fields provided.(Last Name), I am writing to inform you that I will be resigning from my position as (Title) at (Company Name). Learn how to write a letter of resignation to quit your job on good terms. Your resignation email's subject line should say your name and that you're resigning. In the opening paragraph, state your intention to resign and provide a clear date of departure. What is a No Notice Resignation Letter? Note your last working day. 5. (For example, "I regret to inform you that I will be resigning from my position, effective immediately. An Immediate Resignation Letter is a notice that tells a manager or employer of an employee's intention to terminate their employment with immediate effect.