Insert a form into the body of an email

We are trying to add two questions in the body of the NPS email. Currently the email only includes one question using an <a href=""> pointing to the Eloqua form, which works without any issues. However, when adding a second question, we need to get rid of the href and use a <form> inside the email.

The problem is that, although it seems to work correctly in Gmail, Outlook (both the web version and the app) does not support elements such as <form>, <input>, <button> or <select>, which prevents the form from being functional. Also, if it doesn't end up working well in Outlook, the same thing may happen in other email providers.