Create a Pre-populate Scripts for HTML Forms

Hello dear Freelancer, I am looking for a skilled programmer. Please read this post in detail! Here's what I need: Currently, I send traffic (email traffic) like this: 1. User clicks a link in an email 2. Goes to some page (with an HTML <form> and an input box like this: <input type="text" id="email" name="email" placeholder="Email Address..." value=""/> He obviously has to enter his email and follow the rest of the steps. Doesn't matter. What I want to be able to do: 1. User clicks a link in an email - that has his email 'attached' to it like (url)/?email= ... I know how to do this. 2. The form on the page he goes to gets "prepopulated" with his email address. Basically, the email address is already there in the <input> and all he needs to do is click submit. So your job would be to make it possible to do that prepop. We can have a page inbetween (so, after clicking the link, he goes to some auto-redirect page and only then does he go to the actual page) - but, we can NOT control or add any code to the main page. I am fairly sure this is possible using some cookies or something. Once again, to make it perfectly clear - we can NOT add any code to the main page. However, we can add an instant-redirect page in between, that adds a cookie or... something. Looking forward to all bids. You will receive a big compensation if you get this to work. Sincerely, Jan Brzeski JBMarketing