Hi I am sending email to many people with button on that email.When User will click on that button,One document file will open,It may be PDF or .Aspx file. My Problem is If customer click on that button then how can I record which customer clicked on that email automatically? I can't give customerid on that link because that email is generated through email blast and sent to many people. Is it possible to capture that without asking them to login? Please help.