Hello @Daki,
Welcome to the Klaviyo Community!
One way I can imagine you achieving this was using the custom trigger method as part of your popup or flyout form’s display timing setting. Natively, signup forms don’t have the display behavior of an if/then behavior so using the custom trigger option and building in your own desired trigger would be your best option.
For example, if you build in this behavior to only have a Klaviyo form display after the user has visited certain pages, you can also then have a teaser tied to this form with any of the options of either, after form is closed, before displaying form, or before displaying form and after form is closed. Using the before displaying form and after form is closed option would allow you to achieve this experience you’re ultimately looking for of a teaser displaying on every webpage, but only after the user has visited a specific page.
If you need help building out this sort of custom trigger, I would recommend working with a developer you are familiar with or working alongside some of our wonderful Klaviyo Partners!
I hope this helps!
David