Is there a way to prevent a "wrong" email address from appearing in a form prefill field? We have a form that is set to prefill that when people go to the page but for some people, it's pulling an email address that's not theirs. I believe in all cases that it's an email address the user has used in the past for one reason or another (searching for a user with that email address, for instance) but I'm not 100% positive.
Here is the Marketo landing page with the form. https://pages.mapi.net/OP-MAPI-Preference-Center-10_MAPI-Opt-in-Subscription-Management-V1.html
It has some hidden fields, which depend on the user's access. You should see four options. A full member will see eight options.
My understanding is that Marketo is using some form of logic to pull what it believes to be the appropriate cookie but I don't know enough about forms to know if I can help it be more accurate.