Dear judge (name), I am writing to ask for leniency in the sentencing of my husband, because (then give all your reasons and speak only from your heart). I am writing this letter on behalf of a former student of mine who is presently before you on criminal charges and is due to be sentenced shortly.In this article, we will discuss how to write a formal letter to a judge, along with the proper format and a sample letter. How should you start a leniency letter? Explain why you feel you deserve leniency. Address a piece of professional letterhead to the judge at the top of the letter. The core of your letter should explain why you believe the judge should show leniency towards the defendant.