NotificationCenter Enhancer adds useful tweaks that will Enhance your user experience. You can modify the default number of visible lines in NotificationCenter messages from 2, all the way up to 11. This allows you read most emails without opening your Mail.app . Another ability Enhancer has is an option to activate 1 Touch Clear of Messages, no need to Touch the X then Hit Clear, it's already activated for you. More Enhancements coming soon !, Get it while it's cheap.