The eec’s List Growth and Engagement Roundtable has developed an interactive Excel calculator to help retailers measure the ROI of their acquisition and retention email mailings, including deployment costs, list growth calculations, and more. View a sample of the calculator or download the full interactive calculator from the Whitepaper Room. The calculator is $49 for non-members, discounted for silver and gold members, and free to platinum members. Not a member? Learn more about membership.