Fall is just around the corner. As the weather begins to cool, marketers are beginning to focus on the first holiday of the Fall season—Halloween. Experian CheetahMail has compiled trends from last year’s Halloween campaigns to help ensure this year’s campaigns are spook-tacular. 2011 Key Trends: Over half of Halloween-related email volume was sent from catalogers and multichannel retailers. "Costumes" and "candy" were key topics for Halloween subject lines, as well as basic "Happy Halloween" greetings. Over a third of all Halloween mailings are sent in September.