Download a letter of intent to sue (with settlement demand) to inform a defendant that you will sue if they don't pay a settlement amount. This is called a Demand Letter.This is a step you must take before filing a small claims court case. Demand Letter​​ Before you file a small claims case, you must first make a demand on the other party. The demand may be in writing or verbal. Includes sender and recipient details, dispute description, settlement demand, deadline, and governing law. What is a letter of intent to sue a civil action? To that end, I am formally demanding. This letter of intent to sue shall serve as a formal notice that. Intends to commence a lawsuit against you due to the following: I. The Plaintiff.