Remove Default URL Param

I have a landing page with a form that collects email address only. The problem is when someone submits the form, their email address is added as a URL Parameter. This is a big problem for us because we work in education with students and having this display personal information violates Personally identifiable information (PII).

I found the URL Param tool, however any parameters you add are just added to the default, not replace it.

“By default it will use the fields type you selected. If this is an email field ? will populate the default value of this input field.”