How to write a resignation letter that's effective immediately? Dear Ms. Emily Clarke,.Here Is a Resignation Letter Template: I am writing to inform you that I will be resigning from my position as (Title) at (Company Name). To help you draft your resignation letter like the example above, here's a checklist of what to include: What to include in a resignation letter. Please be advised that I am resigning from my role of Product Manager with Bradley Org. My final day in the office will be August 31, 2023. Due to unforeseen circumstances, I must resign from my position effective immediately. Please accept my resignation from all duties at the ABC Toilet Brush Company. Aformentioned resignation is in force with immediate effect. Give a clear reason for leaving, but there is no need to overexplain.