We are trying to start a campaign in which a customer who has a particular promotion will be flagged to get an email. The email will contain a URL to an external site but we want to add the customers account number to the end of the url.
Locate the href attribute of <a> tag where you wish to pass the account number.
Say you have an attribute @accountNumber inside recipient schema which you wish to pass inside the URL. You can do something like <a href="http://www.adobe.com/employee/<%= recipient.accountNumber %>">MyURL</a>