Custom MailChimp form. I used their merge tags to personalize the letter for subscribers. Parents could create a letter for each child choosing from five different letters, which also included a second tier of letters for including a mention of the child’s sibling. Making the illusion that the letter is really from Santa. Filling in the form with the child’s name, gender, a toy they know they may get, gender of sibling and birthday date we create a very personalized creation using MailChimps merge tags. But no child wants to see a coupon on a letter from Santa so an embed style sheet for printing removes those pesky sales.