This document discusses how geomarketing uses location and geodata for targeted marketing campaigns. It provides examples of how geodata from postal addresses can be used to deliver location-based content, select audiences based on proximity, and create personalised maps for mailings. The document outlines a case study where a retailer saw a 63% increase in response rates and a 14% uplift in year-over-year sales when they included personalised maps showing the location of stores on direct mail postcards sent to lapsed customers. It encourages readers to try an A/B test experiment using personalised maps for their own clients to see if it can increase response rates.