Paperplane is an email customization service that lets you draft business emails the way they should be. It helps you manage pertinent attributes of your email marketing. The service offers dedicated templates and guides for newsletters and notifications, thereby helping you get your emails right. There are different plans offered – one each for digests and notifications. Then there is the third plan that encompasses them all. Though not offered for free, you pay a one-time fee and use the service for a lifetime. By the way, the templates have been designed to work on almost all email clients.