The role will include advising clients of the US- and UK-based company on direct marketing activity, as well as customer retention strategies.
John Rizzi, e-Dialog's president and chief executive officer, said: "Arthur Middleton Hughes, with his deep database marketing and analytics expertise, can offer our clients a lot of actionable advice for retaining customers and maximising their lifetime value.
"We are eager to take that advice to the next level and help our clients carry out those strategies through our high-quality e-mail and database marketing services and solutions."
Hughes' database career spans 22 years and he is a regular speaker and lecturer on marketing and economics, as well as the author of books including 'The Complete Database Marketer' and 'Strategic Database Marketing'.
Hughes said: "I am delighted to be working with e-Dialog, which has a solid reputation in the industry for intelligent e-mail marketing and the ability to turn complex customer data into actionable campaigns that achieve unbeatable results."
In addition to his new role Hughes will continue as vice-president at KnowledgeBase Marketing in Richardson, Texas, where he advises clients on database marketing.