An example of a properly addressed letter. Write a personalized response to the child's letter and sign it "From Santa." Insert both letters into an envelope, and address it to the child. Each child will receive a personalized return letter from Santa. Be sure to include your child's name and home address. Get a personalized letter from Santa for your child! Start your letter with a personalized greeting from Santa himself. Write "Dear" and your child's name. Browse our template gallery for an example of how to write a letter to Santa. Claus' Davie Christmas.