Websites like Constant Contact offer small businesses, work-from home types, and freelancers the opportunity to use a "template wizard" to simplify the development and design of their online newsletters. So why are wizard users coming to agencies to develop a template for a template wizard? Good question with a simple answer, the wizard systems are actually more complicated then just hiring an agency to track your stuff in the first place! Unless you want simple color blocks, stretched images, and a lot of time consumed lining up columns. They are wonderful tools for starting out, but when you want to develop more complex designs, control your text colors, and text sizes these types of wizards actually take you back a decade rather then leaping your company into the next century.
So to answer the original question, why do companies with template editors for mailers need agencies? Agencies like Risdall offer design services, copy writing, code development, marketing strategies, and will save you the trouble of lining up all that MESSY MESSY old school coding and if need be Risdall can even develop a simplified template with great copy, text/html options, awesome high resolution pictures laid out in award-worthy design formats.