Best Way to Attribute Form Submissions to Specific Emails in a Nurture Campaign

Hi everyone,

I'm running an Eloqua email nurture campaign where each email contains a CTA that drives to the user same Eloqua landing page with a follow-up request form.

I want to track which specific email a contact clicked from — so that when they submit the form, I can see which email led to the conversion. Ideally, this data would be captured in the form submission itself.

What are the best practices for doing this in Eloqua? Is there a preferred method for attributing form submissions back to the exact email that drove the click (preferably email name, email ID etc…)?