When requesting customers info for subscribing to our newsletter can we embed code inside the text?

When requesting customers info for subscribing to our newsletter can we embed code inside the text for customers to click vs making a page for the for to reside.. saw the pop-up form, also the form clicked from an email link I sent myself it loaded like a webpage

Hello,

You're possible thinking of a lightbox form:

Here's the guide to implement that.

Please let us know if that helped.