Smart Content Based on Query String? Is this possible?

Is it possible to create smart content rules based on a query string?

>>“Is it possible to create smart content rules based on a query string?”

Sure. There are a number of approaches to displaying content based on URL query parameters. These citations will get you started in the right direction.

HubSpot Smart List and Workflow methods …
- see URL query string parameters in list and workflow criteria

HubL and JavaScript methods …
- see Display information based on url factors

HubSpot Referrer Source method … (2015)
- see Tracking utm parameters in HubSpot forms

We like the HubSpot Smart List method …

Thank you. What about the initial landing page?

>>“What about the initial landing page?”

Not sure what you’re asking, but the citations above apply to all HubSpot page types with minor exceptions for blog pages.