Royal Mail's Door to Door department wanted to connect with the top 100 potential clients who use mail as a direct initial communication. They wanted to highlight the service as a potential addition to their marketing mix. We devised a campaign that used a direct mail piece to deliver an initial riddle and PURL (personalised URL). The riddle was written by us to highlight the main reasons for using the service. We designed the mail piece and selected stock for it to be printed on. We processed their data to produce targets with unique PURLs. We then designed the microsite and built this using our tracking software to record site usage based on individual PURLs and this activity was fed back to the sales team at Royal Mail.