Retrieving name/email from an email sent

Hello All

 I have a client that would like to place a persons name and or email ( 
whatever can be retrieved) on a webpage that has a coupon on it. Here is the 
page -  http://www.michaelsondesign.com/dbmi/coupon.html  
 this page will be visited via email sent by client - so what Im trying to say 
is that- since this page is visited via email can I retrieve that email and 
place it on the page above that coupon saying Hello, email@email ,

 Thanks

 Rob

The url link sent to the recipient would need to contain a querystring that 
identified the user. When the user visits the site via the link, a server side 
script would use the querystring in a database query that would retrieve the 
user details.