Direct mail marketing is a great way of offline marketing. Some time we ran direct mail marketing campaign to get offline clients. When creating direct mail marketing we usually want to track when the prospective customer visits our website to gain more information. I have heard that People generally track this record by using designated domains. I am actually not sure about this. What is designated domains? How can I track my direct mail marketing online? Please share your opinion guys. Any ideas would be appreciated. Thanks in advance.