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). A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things.Explain why you feel you deserve leniency. Customer: I need a sample letter of asking a judge for leniency when he is sentencing a former student for criminal charges. How should you start a leniency letter? Address a piece of professional letterhead to the judge at the top of the letter. The letters are best when they come from the heart, but here are some suggestions of topics that you may want to address. The core of your letter should explain why you believe the judge should show leniency towards the defendant.