Personalization can be a key contributor to marketing campaigns. A PURL is a personalized URL. It is included as a link within a well designed email campaign or printed in a postal mailer. It may also be listed on a web site or many other marketing campaigns and assets.
A PURL may look like this: johnsmith.yourdomain.com.
Typically, when an audience notices the the PURL with their name in it, they are hard pressed to forgo the opportunity to see what offer or message you have for them. They become a very effective conversion tool.