Adding parameters to your urls e.g. utm parameters or advanced tracking is a popular way to optimise your sales funnels.

Wishloop can also show/hide popups base on any character string match from your url parameters

For example:

Lets say you own the website https://cakes.com/ and you'd like to trigger a special offer popup for any visitors to your birthday cakes page which come via a specific Facebook ad

In this case the target url for you Facebook ad may contain a url parameter like this one

https://cakes.com/birthday-cakes?ppc=true

To show the popup only for visitors to this page where the url parameter is included (i.e. those visiting it direct from the Facebook ad), simply add the url parameter to the INCLUDE rule of your campaign's 'Where to Show' settings, like so:

The campaign will then display according to your selected parameters, and not for other pages on your host domain.

Further Reading:

Popup targeting options

Triggering popups with URL parameters