How to Write an Immediate Letter of Resignation (4 steps). Please accept this message as my formal notice of resignation.I am fortunate to have received a long awaited opportunity that I cannot pass up. Use a one week notice letter template to inform your current employer that you plan to resign within seven days. Your letter of resignation should be short and professional. Pick the perfect wording and convey the message best suited for your situation. Everything I read says to print a letter of resignation which I don't have a problem with, but just wondering if email is more standard these days. JUST IN: Here's the resignation letter Rep. Collins sent to Gov. Cuomo. Selectman Hodgman asked when the first letter went out.