I have an input field on the homepage of my site that asks the user to input their email address. When the user clicks the submit button, I would like to redirect them to another page on the site (which will contain a form for name, age, etc.) and pass their email address as a variable in the url. The reason I want to pass the email address as a variable in the url is so that the user doesn't have to re-enter this information.
How would I go about doing this? I have gotten the variable to show in the url but am having trouble retrieving it and saving to a variable.