Templates for email marketing campaigns can help cut down on certain repetitive tasks. There is no question they provide you with a consistent and unified style so your emails look consistent. This goes against most people's thoughts about templates, but most people want these things done well rather than cookie-cutter. Templates also do away with the need to be creative or clever in most cases, which saves time and reduces stress as well as letting you focus on improving other areas of your business (since creative work cannot be delegated).