Email continues to be a critical part of most web applications today. Despite the rise of various methods of reaching out to users, transactional email continues to grow. Many developers prefer to offload the email functionality of their application to a service which does the heavy lifting of not just delivering your email but also provides tracking and other various other services. PostageApp, a provider of Email Management Services, has just announced a new version of its product that includes a new delivery engine, analytics and new plans.