I have 3 landing pages (A, B and C) that can be called from within an e-mail. Each of these landing pages can link to each other (e.g. within A you can link to B or C and back if you want). Also I have 1 landing page with a form that can be called from each one of these three landing pages (D). None of the landing pages A, B and C have a form.
The question is as follows: I want to pre-fill the form fields of D with personal data of the person to whom the e-mail was sent. I can add URL variables in the calls to A, B and C, but I can’t do that for D since D is not called from within the e-mail. The question therefore is: how can I share these personal data between A,B, C and finally D?
I was thinking of doing this with a cookie, but this is not 100% failsafe (blocked cookies). Does anyone have a solution for this problem, if possible some experience?
Many thanks in advance!