I'm a little confused as to how query strings or dynamic population can help in this scenario.
The aim to have someone sign up to a newsletter with just a name and email on one form - imagine that sitting on a sidebar of an article. On submission they are then taken off to another form - on a whole page - in an attempt to collect more data i.e. preferences if they wish to provide them.
What's the best method of ensuring that the second form, to collect preferences, automatically populates both the name and email fields.
On the same note, is a similar solution possible where auto populating fields based on a signed in user's info is concerned. e.g. user signs into website and when accessing a similar preference page, the fields are populated based on the users email, username etc.
Many thanks in advance