The document provides three case studies on improving email marketing campaigns through creative makeovers that thank subscribers, intrigue them, or amuse them. The thank you case study details how switching a reactivation campaign to a positive message thanking inactive subscribers significantly increased click-through rates and revenue. The intrigue case study shows how making an eBay deal mysterious boosted click-through rates and average order sizes. The amusement case study outlines how adding humorous editorial content to a boring antivirus newsletter doubled open rates and increased click-through rates six-fold.