A well-drafted cease and desist letter should include: 1. Contact Information: Clearly state the sender's and recipient's contact details. 2. Description of Infringement: Provide a detailed account of the alleged illegal activities. 3. Legal Basis: Reference the specific laws or regulations that are being violated. 4. Demand to Cease and Desist: Clearly state what actions must be stopped. 5. Consequences: Outline the potential legal actions if the recipient fails to comply. 6. Deadline: Provide a reasonable timeframe for the recipient to respond and comply.